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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 is the date used for the last menstrual period …

  2. Menstrual cycle: What's normal, what's not - Mayo Clinic

    Apr 22, 2023 · Understand how to track your menstrual cycle and what to do about irregularities. Do you know when your last menstrual period began or how long it lasted? If not, it might be time to start …

  3. All About Periods (for Teens) | Nemours KidsHealth

    There is a lot to learn about periods. Here are answers to some common questions. When Do Periods Usually Start? Most girls get their first period when they're around 12. But sometimes it comes a few …

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

    5 days ago · 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 …

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

    Periods get lighter and shorter over time, or come when you don’t expect it. You may have spotting or cramping every once in a while until you stop getting your period, and sometimes even after it seems …

  6. 22 period facts you might not have heard in health class - Flo

    Apr 25, 2025 · It’s time to break the stigma and talk openly about periods. These period facts, from a range of different studies and publications, highlight the impact menstrual cycles have on our lives, …

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

    Most people have their period (bleed) for between three and seven days. Is a three-day period normal? A period is normal if it’s anywhere between three and seven days. While on the shorter end of the …

  8. Menstruation (Menstrual Cycle): Phases, What’s Normal

    Sep 4, 2025 · Menstruation occurs when the lining of the uterus sheds by breaking down and leaving the body as blood. Most periods last around three to seven days. What Is Menstruation? Menstruation is …

  9. Normal Period: Timing, Flow, Symptoms, and Tracking - WebMD

    May 27, 2025 · What Is a Normal Period? A normal period (or normal menstruation) is different for everyone who menstruates. It also changes at different times of your life. For example, as you near …

  10. Your menstrual cycle - Office on Women's Health

    Jan 13, 2025 · Throughout a monthly menstrual cycle, your body makes different amounts of chemicals called hormones to prepare for pregnancy. These changing hormone levels can cause menstrual …