The 4 Stages Of The Menstrual Cycle Aunt Flow Phase 1 — menstrual phase. the first day of bleeding is considered day one of your menstrual cycle. on this today, the hormone progesterone plunges, which causes the uterine lining to shed, aka "your period". often, a period lasts between 3 and 7 days. The menstrual cycle is divided into four phases: menstrual phase; follicular phase; ovulation phase; luteal phase; the length of each phase can vary and change over time.
How The Menstrual Cycle Works Menstruation Guide Dr Jolene Brighten The 4 menstrual cycle phases 1 menstrual phase (days 1 5) the first menstrual cycle phase, aka the menstrual phase starts on the first day of your period and lasts until approximately the fifth day. during this time, your estrogen and progesterone levels decrease. this decline has a domino affect, in turn reducing the production of serotonin. Product. product. your menstrual cycle is more than your period. find out about the different phases, how long they are, and why they can change. A normal menstrual cycle is a cycle that: occurs roughly every 21 to 35 days. causes bleeding for between three and seven days. once you reach your 20s, your cycles become more consistent and regular. once your body begins transitioning to menopause, your periods will change again and become more irregular. The menstrual cycle lasts about a month. grinvalds getty images. the menstrual cycle has four phases: menstrual, follicular, ovulation, and luteal. the main purpose of the menstrual cycle is to.
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