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 10, 2025 · Getting a period, or menstruating, occurs about once a month, may come with PMS or PMDD, and may give clues about your overall health.

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

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 …

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.

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.

From your first period through to menopause, menstruation is a normal, healthy biological function that is a part of being female. At some point, most women will have questions about menstruation.

Mar 25, 2019 · What is a normal menstrual cycle? Your period — and the PMS symptoms that can accompany it — is just one part of your monthly menstrual cycle.

Feb 26, 2021 · Tracking your personal menstrual cycle can help you prepare for an upcoming period, inform you of the best time to have sex in order to conceive, and keep you in tune with your hormones.

Aug 12, 2022 · Some things about your period -- like heavy flow and type of cramps -- offer clues to problems in your body. Find out from WebMD's slideshow what's normal and when to see the doctor.