Menstruation is the most visible phase of the menstrual cycle and its beginning is used as the marker between cycles. The first day of menstrual bleeding is the date used for the last menstrual period …

Dec 9, 2022 · Your menstrual cycle begins on the first day of your period. Your cycle prepares your body for a possible pregnancy. The average cycle lasts between 24 and 38 days.

Feb 27, 2012 · Menstruation — aka having your period — is when blood and tissue from your uterus comes out of your vagina. It usually happens once every month.

Dec 10, 2025 · Periods, also known as menstruation, occur when your uterus sheds its lining, causing blood and mucus to discharge from the vagina. 1 This usually occurs once a month if you are not …

Jul 29, 2025 · Getting your period can be stressful for all kinds of reasons. You might feel more tired than usual. You might get especially bad cramps, or have a hard time curbing food cravings. …

Jan 11, 2026 · Menstruation (or period) happens monthly. As the uterus sheds its lining, vaginal bleeding follows. Menstrual blood is made of blood and tissue.

Apr 22, 2023 · What's typical? The menstrual cycle is counted from the first day of one period to the first day of the next. The cycle isn't the same for everyone. Menstrual bleeding might happen every 21 to …

Sep 4, 2025 · Menstruation is period bleeding, which is casually referred to as “having your period.” This happens monthly (for most females) during your fertile years, except during pregnancy.

Jan 13, 2025 · A menstrual cycle begins with the first day of your period, or menstruation [MEN-stroo-AY-shuhn] and starts over again when the next period begins. Throughout a monthly menstrual …

Oct 15, 2025 · Starting your period can be confusing, but don’t worry! We’ll cover what to expect with your first period, from knowing the signs of menstruation and how long it might last to dealing with …