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class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Menstrual cycle</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 70 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-70" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">70 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Menstruationszyklus" title="Menstruationszyklus – Alemannic" lang="gsw" hreflang="gsw" data-title="Menstruationszyklus" data-language-autonym="Alemannisch" data-language-local-name="Alemannic" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-ar badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ar.wikipedia.org/wiki/%D8%AF%D9%88%D8%B1%D8%A9_%D8%B4%D9%87%D8%B1%D9%8A%D8%A9" title="دورة شهرية – Arabic" lang="ar" hreflang="ar" data-title="دورة شهرية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Ciclu_sexual_femen%C3%ADn" title="Ciclu sexual femenín – Asturian" lang="ast" hreflang="ast" data-title="Ciclu sexual femenín" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Ayba%C5%9F%C4%B1_d%C3%B6vr%C3%BC" title="Aybaşı dövrü – Azerbaijani" lang="az" hreflang="az" data-title="Aybaşı dövrü" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Menstruwal_na_siklo" title="Menstruwal na siklo – Central Bikol" lang="bcl" hreflang="bcl" data-title="Menstruwal na siklo" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9C%D0%B5%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B0%D0%BB%D0%B5%D0%BD_%D1%86%D0%B8%D0%BA%D1%8A%D0%BB" title="Менструален цикъл – Bulgarian" lang="bg" hreflang="bg" data-title="Менструален цикъл" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Menstruacijski_ciklus" title="Menstruacijski ciklus – Bosnian" lang="bs" hreflang="bs" data-title="Menstruacijski ciklus" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Cicle_menstrual" title="Cicle menstrual – Catalan" lang="ca" hreflang="ca" data-title="Cicle menstrual" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%9C%D0%B5%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B0%D1%86%D0%B8_%D1%86%D0%B8%D0%BA%D0%BB%C4%95" title="Менструаци циклĕ – Chuvash" lang="cv" hreflang="cv" data-title="Менструаци циклĕ" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Menstrua%C4%8Dn%C3%AD_cyklus" title="Menstruační cyklus – Czech" lang="cs" hreflang="cs" data-title="Menstruační cyklus" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da badge-Q17559452 badge-recommendedarticle mw-list-item" title="recommended article"><a href="https://da.wikipedia.org/wiki/Menstruationscyklus" title="Menstruationscyklus – Danish" lang="da" hreflang="da" data-title="Menstruationscyklus" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Menstruationszyklus" title="Menstruationszyklus – German" lang="de" hreflang="de" data-title="Menstruationszyklus" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Menstruaalts%C3%BCkkel" title="Menstruaaltsükkel – Estonian" lang="et" hreflang="et" data-title="Menstruaaltsükkel" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9A%CE%B1%CF%84%CE%B1%CE%BC%CE%AE%CE%BD%CE%B9%CE%BF%CF%82_%CE%BA%CF%8D%CE%BA%CE%BB%CE%BF%CF%82" title="Καταμήνιος κύκλος – Greek" lang="el" hreflang="el" data-title="Καταμήνιος κύκλος" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://en.wikipedia.org/wiki/Menstrual_cycle" title="Menstrual cycle – English" lang="en" hreflang="en" data-title="Menstrual cycle" data-language-autonym="English" data-language-local-name="English" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Ciclo_sexual_femenino" title="Ciclo sexual femenino – Spanish" lang="es" hreflang="es" data-title="Ciclo sexual femenino" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Hilekoaren_ziklo" title="Hilekoaren ziklo – Basque" lang="eu" hreflang="eu" data-title="Hilekoaren ziklo" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://fa.wikipedia.org/wiki/%DA%86%D8%B1%D8%AE%D9%87_%D9%82%D8%A7%D8%B9%D8%AF%DA%AF%DB%8C" title="چرخه قاعدگی – Persian" lang="fa" hreflang="fa" data-title="چرخه قاعدگی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Cycle_menstruel" title="Cycle menstruel – French" lang="fr" hreflang="fr" data-title="Cycle menstruel" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Timthriall_m%C3%ADosta" title="Timthriall míosta – Irish" lang="ga" hreflang="ga" data-title="Timthriall míosta" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Ciclo_menstrual" title="Ciclo menstrual – Galician" lang="gl" hreflang="gl" data-title="Ciclo menstrual" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9B%94%EA%B2%BD_%EC%A3%BC%EA%B8%B0" title="월경 주기 – Korean" lang="ko" hreflang="ko" data-title="월경 주기" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B4%D5%A1%D5%B7%D5%BF%D5%A1%D5%B6%D5%A1%D5%B5%D5%AB%D5%B6_%D6%81%D5%AB%D5%AF%D5%AC" title="Դաշտանային ցիկլ – Armenian" lang="hy" hreflang="hy" data-title="Դաշտանային ցիկլ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AE%E0%A4%BE%E0%A4%B8%E0%A4%BF%E0%A4%95_%E0%A4%A7%E0%A4%B0%E0%A5%8D%E0%A4%AE" title="मासिक धर्म – Hindi" lang="hi" hreflang="hi" data-title="मासिक धर्म" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Menstrualni_ciklus" title="Menstrualni ciklus – Croatian" lang="hr" hreflang="hr" data-title="Menstrualni ciklus" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://id.wikipedia.org/wiki/Siklus_menstruasi" title="Siklus menstruasi – Indonesian" lang="id" hreflang="id" data-title="Siklus menstruasi" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Ciclo_mestruale" title="Ciclo mestruale – Italian" lang="it" hreflang="it" data-title="Ciclo mestruale" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%94%D7%9E%D7%97%D7%96%D7%95%D7%A8_%D7%94%D7%97%D7%95%D7%93%D7%A9%D7%99" title="המחזור החודשי – Hebrew" lang="he" hreflang="he" data-title="המחזור החודשי" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%8B%E0%B2%A4%E0%B3%81%E0%B2%9A%E0%B2%95%E0%B3%8D%E0%B2%B0" title="ಋತುಚಕ್ರ – Kannada" lang="kn" hreflang="kn" data-title="ಋತುಚಕ್ರ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9B%E1%83%94%E1%83%9C%E1%83%A1%E1%83%A2%E1%83%A0%E1%83%A3%E1%83%90%E1%83%9A%E1%83%A3%E1%83%A0%E1%83%98_%E1%83%AA%E1%83%98%E1%83%99%E1%83%9A%E1%83%98" title="მენსტრუალური ციკლი – Georgian" lang="ka" hreflang="ka" data-title="მენსტრუალური ციკლი" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Sik_menstriy%C3%A8l" title="Sik menstriyèl – Haitian Creole" lang="ht" hreflang="ht" data-title="Sik menstriyèl" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Haitian Creole" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/%C3%87erxa_mehane" title="Çerxa mehane – Kurdish" lang="ku" hreflang="ku" data-title="Çerxa mehane" data-language-autonym="Kurdî" data-language-local-name="Kurdish" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Cyclus_menstrualis" title="Cyclus menstrualis – Latin" lang="la" hreflang="la" data-title="Cyclus menstrualis" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Menstru%C4%81lais_cikls" title="Menstruālais cikls – Latvian" lang="lv" hreflang="lv" data-title="Menstruālais cikls" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/M%C4%97nesini%C5%B3_ciklas" title="Mėnesinių ciklas – Lithuanian" lang="lt" hreflang="lt" data-title="Mėnesinių ciklas" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Menstru%C3%A1ci%C3%B3s_ciklus" title="Menstruációs ciklus – Hungarian" lang="hu" hreflang="hu" data-title="Menstruációs ciklus" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mad mw-list-item"><a href="https://mad.wikipedia.org/wiki/Siklus_m%C3%A8nstruasi" title="Siklus mènstruasi – Madurese" lang="mad" hreflang="mad" data-title="Siklus mènstruasi" data-language-autonym="Madhurâ" data-language-local-name="Madurese" class="interlanguage-link-target"><span>Madhurâ</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9C%D0%B5%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B0%D0%BB%D0%B5%D0%BD_%D1%86%D0%B8%D0%BA%D0%BB%D1%83%D1%81" title="Менструален циклус – Macedonian" lang="mk" hreflang="mk" data-title="Менструален циклус" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%86%E0%B5%BC%E0%B4%A4%E0%B5%8D%E0%B4%A4%E0%B4%B5%E0%B4%9A%E0%B4%95%E0%B5%8D%E0%B4%B0%E0%B4%82" title="ആർത്തവചക്രം – Malayalam" lang="ml" hreflang="ml" data-title="ആർത്തവചക്രം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%AE%E0%A4%BE%E0%A4%B8%E0%A4%BF%E0%A4%95_%E0%A4%AA%E0%A4%BE%E0%A4%B3%E0%A5%80" title="मासिक पाळी – Marathi" lang="mr" hreflang="mr" data-title="मासिक पाळी" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Kitaran_haid" title="Kitaran haid – Malay" lang="ms" hreflang="ms" data-title="Kitaran haid" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Menstruatiecyclus" title="Menstruatiecyclus – Dutch" lang="nl" hreflang="nl" data-title="Menstruatiecyclus" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%AE%E0%A4%B9%E0%A4%BF%E0%A4%A8%E0%A4%BE%E0%A4%B5%E0%A4%BE%E0%A4%B0%E0%A5%80_%E0%A4%9A%E0%A4%95%E0%A5%8D%E0%A4%B0" title="महिनावारी चक्र – Nepali" lang="ne" hreflang="ne" data-title="महिनावारी चक्र" data-language-autonym="नेपाली" data-language-local-name="Nepali" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%9C%88%E7%B5%8C%E5%91%A8%E6%9C%9F" title="月経周期 – Japanese" lang="ja" hreflang="ja" data-title="月経周期" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Cykl_miesi%C4%85czkowy" title="Cykl miesiączkowy – Polish" lang="pl" hreflang="pl" data-title="Cykl miesiączkowy" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://pt.wikipedia.org/wiki/Ciclo_menstrual" title="Ciclo menstrual – Portuguese" lang="pt" hreflang="pt" data-title="Ciclo menstrual" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Ciclu_menstrual" title="Ciclu menstrual – Romanian" lang="ro" hreflang="ro" data-title="Ciclu menstrual" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/K%27ikuy" title="K'ikuy – Quechua" lang="qu" hreflang="qu" data-title="K'ikuy" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9C%D0%B5%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9_%D1%86%D0%B8%D0%BA%D0%BB" title="Менструальный цикл – Russian" lang="ru" hreflang="ru" data-title="Менструальный цикл" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%A2%E1%B1%AE%E1%B1%B1%E1%B1%A5%E1%B1%AA%E1%B1%A9%E1%B1%A8%E1%B1%9F%E1%B1%9E_%E1%B1%A5%E1%B1%9F%E1%B1%AD%E1%B1%A0%E1%B1%9F%E1%B1%9E" title="ᱢᱮᱱᱥᱪᱩᱨᱟᱞ ᱥᱟᱭᱠᱟᱞ – Santali" lang="sat" hreflang="sat" data-title="ᱢᱮᱱᱥᱪᱩᱨᱟᱞ ᱥᱟᱭᱠᱟᱞ" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="Santali" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Cikli_menstrual" title="Cikli menstrual – Albanian" lang="sq" hreflang="sq" data-title="Cikli menstrual" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%94%E0%B7%83%E0%B6%B4%E0%B7%8A_%E0%B6%A0%E0%B6%9A%E0%B7%8A%E2%80%8D%E0%B6%BB" title="ඔසප් චක්‍ර – Sinhala" lang="si" hreflang="si" data-title="ඔසප් චක්‍ර" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Menstruacijski_ciklus" title="Menstruacijski ciklus – Slovenian" lang="sl" hreflang="sl" data-title="Menstruacijski ciklus" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%B3%D9%88%D9%88%DA%95%DB%8C_%D9%85%D8%A7%D9%86%DA%AF%D8%A7%D9%86%DB%95" title="سووڕی مانگانە – Central Kurdish" lang="ckb" hreflang="ckb" data-title="سووڕی مانگانە" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9C%D0%B5%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B0%D0%BB%D0%BD%D0%B8_%D1%86%D0%B8%D0%BA%D0%BB%D1%83%D1%81" title="Менструални циклус – Serbian" lang="sr" hreflang="sr" data-title="Менструални циклус" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Menstrualni_ciklus" title="Menstrualni ciklus – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Menstrualni ciklus" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Siklus_m%C3%A9nstruasi" title="Siklus ménstruasi – Sundanese" lang="su" hreflang="su" data-title="Siklus ménstruasi" data-language-autonym="Sunda" data-language-local-name="Sundanese" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Kuukautiskierto" title="Kuukautiskierto – Finnish" lang="fi" hreflang="fi" data-title="Kuukautiskierto" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Menstruationscykeln" title="Menstruationscykeln – Swedish" lang="sv" hreflang="sv" data-title="Menstruationscykeln" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9C%D0%B5%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B0%D0%BB%D1%8C_%D1%86%D0%B8%D0%BA%D0%BB" title="Менструаль цикл – Tatar" lang="tt" hreflang="tt" data-title="Менструаль цикл" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%8B%E0%B0%A4%E0%B1%81%E0%B0%9A%E0%B0%95%E0%B1%8D%E0%B0%B0%E0%B0%82" title="ఋతుచక్రం – Telugu" lang="te" hreflang="te" data-title="ఋతుచక్రం" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A3%E0%B8%AD%E0%B8%9A%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%88%E0%B8%B3%E0%B9%80%E0%B8%94%E0%B8%B7%E0%B8%AD%E0%B8%99" title="รอบประจำเดือน – Thai" lang="th" hreflang="th" data-title="รอบประจำเดือน" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tcy mw-list-item"><a href="https://tcy.wikipedia.org/wiki/%E0%B2%AE%E0%B2%A6%E0%B2%BF%E0%B2%AE%E0%B2%BE%E0%B2%B3%E0%B3%8D_%E0%B2%AE%E0%B2%A6%E0%B2%BF%E0%B2%AE%E0%B3%86" title="ಮದಿಮಾಳ್ ಮದಿಮೆ – Tulu" lang="tcy" hreflang="tcy" data-title="ಮದಿಮಾಳ್ ಮದಿಮೆ" data-language-autonym="ತುಳು" data-language-local-name="Tulu" class="interlanguage-link-target"><span>ತುಳು</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/%C3%82det_d%C3%B6ng%C3%BCs%C3%BC" title="Âdet döngüsü – Turkish" lang="tr" hreflang="tr" data-title="Âdet döngüsü" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9C%D0%B5%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B0%D0%BB%D1%8C%D0%BD%D0%B8%D0%B9_%D1%86%D0%B8%D0%BA%D0%BB" title="Менструальний цикл – Ukrainian" lang="uk" hreflang="uk" data-title="Менструальний цикл" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Siclo_mestrua%C5%82e" title="Siclo mestruałe – Venetian" lang="vec" hreflang="vec" data-title="Siclo mestruałe" data-language-autonym="Vèneto" data-language-local-name="Venetian" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vi badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://vi.wikipedia.org/wiki/Chu_k%E1%BB%B3_kinh_nguy%E1%BB%87t" title="Chu kỳ kinh nguyệt – Vietnamese" lang="vi" hreflang="vi" data-title="Chu kỳ kinh nguyệt" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E6%9C%88%E7%BB%8F%E5%91%A8%E6%9C%9F" title="月经周期 – Wu" lang="wuu" hreflang="wuu" data-title="月经周期" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%B6%93%E6%9C%9F" title="經期 – Cantonese" lang="yue" hreflang="yue" data-title="經期" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%9C%88%E7%B6%93%E9%80%B1%E6%9C%9F" title="月經週期 – Chinese" lang="zh" hreflang="zh" data-title="月經週期" 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src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2a/MenstrualCycle2_en.svg/220px-MenstrualCycle2_en.svg.png" decoding="async" width="220" height="215" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2a/MenstrualCycle2_en.svg/330px-MenstrualCycle2_en.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2a/MenstrualCycle2_en.svg/440px-MenstrualCycle2_en.svg.png 2x" data-file-width="430" data-file-height="420" /></a><figcaption>Notice how each graph relates to the others</figcaption></figure> <p>The <b>menstrual cycle</b> is a process that adult <a href="/wiki/Woman" title="Woman">women</a> go through. The menstrual cycle for a woman will repeat every 28 days while they are not <a href="/wiki/Pregnancy" title="Pregnancy">pregnant</a>. During this time, the women's <a href="/wiki/Ovary" title="Ovary">ovaries</a> create a mature <a href="/wiki/Ovum" title="Ovum">ovum</a> (egg). Then the woman's body prepares for pregnancy by thickening the walls of the <a href="/wiki/Uterus" title="Uterus">uterus</a>. If the woman <a href="/wiki/Fertilization" title="Fertilization">does not become pregnant</a> during this time, the egg and the <a href="/wiki/Endometrium" title="Endometrium">lining of the uterus</a> come out of the woman's body during <a href="/wiki/Menstruation" title="Menstruation">menstruation</a>.<sup id="cite_ref-gov_1-0" class="reference"><a href="#cite_note-gov-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>The menstrual cycle process is controlled by four major <a href="/wiki/Hormones" class="mw-redirect" title="Hormones">hormones</a>: <a href="/wiki/Follicle_stimulating_hormone" class="mw-redirect" title="Follicle stimulating hormone">follicle stimulating hormone</a>; <a href="/wiki/Luteinising_hormone" class="mw-redirect" title="Luteinising hormone">luteinising hormone</a>; <a href="/wiki/Estrogen" title="Estrogen">estrogen</a>; and <a href="/wiki/Progesterone" title="Progesterone">progesterone</a>. These hormones prepare the uterus to receive a <a href="/wiki/Fertilization" title="Fertilization">fertilized</a> egg and control its development.<sup id="cite_ref-ucsf_2-0" class="reference"><a href="#cite_note-ucsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>The menstrual cycle has three stages: the Follicular stage, Ovulation, and the Luteal (or premenstrual) stage. The cycle will stop if the woman gets pregnant (if a fertilized egg implants itself into the lining of the uterus).<sup id="cite_ref-ucsf_2-1" class="reference"><a href="#cite_note-ucsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Follicular_Stage">Follicular Stage</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Menstrual_cycle&veaction=edit&section=1" title="Change section: Follicular Stage" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Menstrual_cycle&action=edit&section=1" title="Edit section's source code: Follicular Stage"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>This stage is the start of the menstrual cycle, and is counted as day one of the cycle. This stage starts when the amount of progesterone and estrogen in a woman's <a href="/wiki/Blood" title="Blood">blood</a> drop. This causes the <a href="/wiki/Endometrium" title="Endometrium">endometrium</a> - the thick lining of the uterus - to leave the woman's body through menstruation. It will appear as <a href="/wiki/Bleeding" title="Bleeding">bleeding</a> from the <a href="/wiki/Vagina" title="Vagina">vagina</a>. This stage lasts from 4–6 days.<sup id="cite_ref-au_3-0" class="reference"><a href="#cite_note-au-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>At the start of this stage, the <a href="/wiki/Pituitary_gland" title="Pituitary gland">pituitary gland</a> will begin to release more <a href="/wiki/Follicle_stimulating_hormone" class="mw-redirect" title="Follicle stimulating hormone">follicle stimulating hormone</a>. This will continue for 3-4 days. This makes several <a href="/w/index.php?title=Follicles&action=edit&redlink=1" class="new" title="Follicles (not yet started)">follicles</a> grow in one of the <a href="/wiki/Ovaries" class="mw-redirect" title="Ovaries">ovaries</a>. Each follicle contains an immature egg. These follicles create estrogen.<sup id="cite_ref-au_3-1" class="reference"><a href="#cite_note-au-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Usually, the amount of <a href="/wiki/Follicle_stimulating_hormone" class="mw-redirect" title="Follicle stimulating hormone">follicle stimulating hormone</a> in the body peaks during the third or fourth day of menstruation. All but one of the follicles dies off. The one that is left releases even more estrogen. Once again, the lining of the uterus thickens. Near the end of the stage, a woman's estrogen levels peak. This causes the pituitary gland to release <a href="/wiki/Luteinising_hormone" class="mw-redirect" title="Luteinising hormone">luteinising hormone</a>, which also peaks at this time.<sup id="cite_ref-ucsf_2-2" class="reference"><a href="#cite_note-ucsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Ovulation">Ovulation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Menstrual_cycle&veaction=edit&section=2" title="Change section: Ovulation" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Menstrual_cycle&action=edit&section=2" title="Edit section's source code: Ovulation"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Ovulation happens roughly every 14 days. This is when the mature egg is released into the <a href="/wiki/Fallopian_tube" title="Fallopian tube">fallopian tube</a> ready for fertilisation. </p> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Order_of_changes_in_ovary.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Order_of_changes_in_ovary.svg/220px-Order_of_changes_in_ovary.svg.png" decoding="async" width="220" height="182" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Order_of_changes_in_ovary.svg/330px-Order_of_changes_in_ovary.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Order_of_changes_in_ovary.svg/440px-Order_of_changes_in_ovary.svg.png 2x" data-file-width="700" data-file-height="580" /></a><figcaption>The ova leaves the follicle and enters the oviduct</figcaption></figure> <p><a href="/wiki/Ovulation" class="mw-redirect" title="Ovulation">Ovulation</a> happens if there is both a rise in estrogen and a peak in <a href="/wiki/Luteinising_hormone" class="mw-redirect" title="Luteinising hormone">luteinising hormone</a> at the end of the follicular stage. The rising levels of <a href="/wiki/Luteinising_hormone" class="mw-redirect" title="Luteinising hormone">luteinising hormone</a> make the ovum mature. The follicle that contains the ovum swells and breaks open. (In the next stage, the leftover cells of the follicle turn into an important structure called the corpus luteum.) The egg is released into the <a href="/wiki/Fallopian_tube" title="Fallopian tube">Fallopian tube</a>. </p><p>During ovulation, a woman's body <a href="/wiki/Temperature" title="Temperature">temperature</a> is usually about 0.5 degrees <a href="/wiki/Celsius" title="Celsius">Celsius</a> over normal.<sup id="cite_ref-book_4-0" class="reference"><a href="#cite_note-book-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Luteal_Stage">Luteal Stage</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Menstrual_cycle&veaction=edit&section=3" title="Change section: Luteal Stage" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Menstrual_cycle&action=edit&section=3" title="Edit section's source code: Luteal Stage"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The follicle cells that used to hold the ovum now release progesterone into the body. This causes the <a href="/wiki/Endometrium" title="Endometrium">endometrium</a> to get even thicker.<sup id="cite_ref-ucsf_2-3" class="reference"><a href="#cite_note-ucsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>If an ovum is <a href="/wiki/Fertilization" title="Fertilization">fertilized</a>, it happens during this step. A woman becomes pregnant when a man's <a href="/wiki/Sperm" title="Sperm">sperm</a> fertilizes one of her ova, which then plants itself into the lining of the uterus.<sup id="cite_ref-gov_1-1" class="reference"><a href="#cite_note-gov-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="If_fertilized">If fertilized</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Menstrual_cycle&veaction=edit&section=4" title="Change section: If fertilized" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Menstrual_cycle&action=edit&section=4" title="Edit section's source code: If fertilized"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>If the ovum is fertilized during ovulation, it will become a <a href="/wiki/Zygote" title="Zygote">zygote</a>. It will start to copy itself over and over again through <a href="/wiki/Mitosis" title="Mitosis">mitosis</a>. It will also move from the ovarian duct into the uterus. The levels of estrogen and progesterone in the body remain high. The zygote grows into an <a href="/wiki/Embryo" title="Embryo">embryo</a> and implants itself into the endometrium tissue of the uterus. This forms a <a href="/wiki/Placenta" title="Placenta">placenta</a>, which starts to mature.<sup id="cite_ref-ov_5-0" class="reference"><a href="#cite_note-ov-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>After fertilization, the menstrual cycle stops so the embryo can continue to mature for the next 9 months. Progesterone and estrogen levels will stay high until the <a href="/wiki/Fetus" title="Fetus">fetus</a> is ready to be <a href="/wiki/Birth" title="Birth">birthed</a>.<sup id="cite_ref-ov_5-1" class="reference"><a href="#cite_note-ov-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Eventually, after giving birth, a woman's menstrual cycle will return to the way it was before she got pregnant.<sup id="cite_ref-ov_5-2" class="reference"><a href="#cite_note-ov-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="If_not_fertilized">If not fertilized</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Menstrual_cycle&veaction=edit&section=5" title="Change section: If not fertilized" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Menstrual_cycle&action=edit&section=5" title="Edit section's source code: If not fertilized"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Until around day 22, estrogen levels increase a little. However, after day 22, the corpus luteum stops making progesterone, and the levels of both progesterone and estrogen in the body start to drop. The amount of progesterone and estrogen in the body are at their lowest around the 28th day of the menstrual cycle.<sup id="cite_ref-ucsf_2-4" class="reference"><a href="#cite_note-ucsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Then the cycle begins again.<sup id="cite_ref-ucsf_2-5" class="reference"><a href="#cite_note-ucsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Menstrual_cycle&veaction=edit&section=6" title="Change section: References" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Menstrual_cycle&action=edit&section=6" title="Edit section's source code: References"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9724317">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-gov-1"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-gov_1-0">1.0</a></sup> <sup><a href="#cite_ref-gov_1-1">1.1</a></sup></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r9724332">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFNelson,_M.D.,_Laurence_N.2014" class="citation web cs1">Nelson, M.D., Laurence N. (December 23, 2014). <a rel="nofollow" class="external text" href="https://www.womenshealth.gov/publications/our-publications/fact-sheet/menstruation.html">"Menstruation and the Menstrual Cycle Fact Sheet"</a>. <i>Office on Women’s Health</i>. United States Department of Health and Human Services.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Office+on+Women%E2%80%99s+Health&rft.atitle=Menstruation+and+the+Menstrual+Cycle+Fact+Sheet&rft.date=2014-12-23&rft.au=Nelson%2C+M.D.%2C+Laurence+N.&rft_id=https%3A%2F%2Fwww.womenshealth.gov%2Fpublications%2Four-publications%2Ffact-sheet%2Fmenstruation.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMenstrual+cycle" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_web" title="Template:Cite web">cite web</a>}}</code>: CS1 maint: multiple names: authors list (<a href="/wiki/Category:CS1_maint:_multiple_names:_authors_list" title="Category:CS1 maint: multiple names: authors list">link</a>)</span></span> </li> <li id="cite_note-ucsf-2"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-ucsf_2-0">2.0</a></sup> <sup><a href="#cite_ref-ucsf_2-1">2.1</a></sup> <sup><a href="#cite_ref-ucsf_2-2">2.2</a></sup> <sup><a href="#cite_ref-ucsf_2-3">2.3</a></sup> <sup><a href="#cite_ref-ucsf_2-4">2.4</a></sup> <sup><a href="#cite_ref-ucsf_2-5">2.5</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.ucsfhealth.org/education/the_menstrual_cycle/">"The Menstrual Cycle"</a>. <i>University of California San Francisco Medical Center</i>. The Regents of the University of California. 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=University+of+California+San+Francisco+Medical+Center&rft.atitle=The+Menstrual+Cycle&rft.date=2016&rft_id=https%3A%2F%2Fwww.ucsfhealth.org%2Feducation%2Fthe_menstrual_cycle%2F&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMenstrual+cycle" class="Z3988"></span></span> </li> <li id="cite_note-au-3"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-au_3-0">3.0</a></sup> <sup><a href="#cite_ref-au_3-1">3.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/menstrual-cycle">"Menstrual Cycle"</a>. <i>Better Health Channel</i>. State Government of Victoria, Australia. 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Better+Health+Channel&rft.atitle=Menstrual+Cycle&rft.date=2016&rft_id=https%3A%2F%2Fwww.betterhealth.vic.gov.au%2Fhealth%2Fconditionsandtreatments%2Fmenstrual-cycle&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMenstrual+cycle" class="Z3988"></span></span> </li> <li id="cite_note-book-4"><span class="mw-cite-backlink"><a href="#cite_ref-book_4-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFCollier,_Merri2009" class="citation book cs1">Collier, Merri (2009). <i>Contraception – Healthy Choices: A Contraceptive Clinic in a Book</i>. University of New South Wales, Family Planning NSW. p. 102. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-7422-3136-5" title="Special:BookSources/978-1-7422-3136-5"><bdi>978-1-7422-3136-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Contraception+%E2%80%93+Healthy+Choices%3A+A+Contraceptive+Clinic+in+a+Book&rft.pages=102&rft.pub=University+of+New+South+Wales%2C+Family+Planning+NSW&rft.date=2009&rft.isbn=978-1-7422-3136-5&rft.au=Collier%2C+Merri&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMenstrual+cycle" class="Z3988"></span></span> </li> <li id="cite_note-ov-5"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-ov_5-0">5.0</a></sup> <sup><a href="#cite_ref-ov_5-1">5.1</a></sup> <sup><a href="#cite_ref-ov_5-2">5.2</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/ovulation">"Ovulation"</a>. <i>Better Health Channel</i>. State Government of Victoria, Australia. 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Better+Health+Channel&rft.atitle=Ovulation&rft.date=2016&rft_id=https%3A%2F%2Fwww.betterhealth.vic.gov.au%2Fhealth%2Fconditionsandtreatments%2Fovulation&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AMenstrual+cycle" class="Z3988"></span></span> </li> </ol></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://simple.wikipedia.org/w/index.php?title=Menstrual_cycle&oldid=9568775">https://simple.wikipedia.org/w/index.php?title=Menstrual_cycle&oldid=9568775</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categories" title="Special:Categories">Category</a>: <ul><li><a href="/wiki/Category:Female_reproductive_system" title="Category:Female reproductive system">Female reproductive system</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Pages_using_the_JsonConfig_extension" title="Category:Pages using the JsonConfig extension">Pages using the JsonConfig extension</a></li><li><a href="/wiki/Category:CS1_maint:_multiple_names:_authors_list" title="Category:CS1 maint: multiple names: authors list">CS1 maint: multiple names: authors list</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last changed on 28 May 2024, at 18:18.</li> <li id="footer-info-copyright">Text is available under the <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike License</a> and the <a href="/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License" title="Wikipedia:Text of the GNU Free Documentation License">GFDL</a>; additional terms may apply. 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