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  1. Menstruation - Wikipedia

    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 …

  2. Menstrual Cycle (Normal Menstruation): Overview & Phases

    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 …

  3. Menstruation: 13 Period Facts You Need To Know - Health

    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 …

  4. Menstruation | Period | MedlinePlus

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

  5. What is Menstruation? | Get Facts About Having Your Period

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

  6. Period Symptoms and Signs: Normal, and When to See a Doctor

    Feb 4, 2022 · What is a normal menstrual cycle? Your period — and the PMS symptoms that can accompany it — is just one part of your monthly …

  7. 4 phases of the menstrual cycle: How to feel your best around your period

    Jul 27, 2025 · The menstrual phase is your actual period, or when you’re shedding your uterine lining and bleeding. It usually lasts 3 to 5 days, and often …

  8. You Know All the Signs: Your Period is Coming. - WebMD

    Dec 10, 2024 · When your period is approaching, you usually know it. Here’s a list of common physical and emotional signs that your period is on its way.

  9. Period Tracker |Free Online Period Calculator Cycle Tracker

    Predict your next period, ovulation & fertile days instantly. Log cycles, track patterns, get email reminders — all free, no signup required.