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 …

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 …

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

Sep 21, 2025 · Menstruation, also known as a period, occurs when your uterus sheds its lining, causing blood and mucus to discharge from the vagina. 1 This usually occurs once a month if …

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.

Aug 25, 2025 · Discover 9 early signs your period is coming, from acne to cramps. Learn causes, PMS relief tips, and how to prepare for your monthly cycle.

It may look like a lot of blood, but a girl usually only loses a few tablespoons of blood during the whole period. Most girls need to change their pad, tampon, or menstrual cup about 3‒6 times …

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 29, 2024 · Menstruation (or period) happens monthly. As the uterus sheds its lining, vaginal bleeding follows. Menstrual blood is made of blood and tissue.

Jul 29, 2021 · 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 …