The menses phase: This phase begins on the first day of your period. It's when the lining of your uterus sheds through your vagina if pregnancy hasn’t occurred. Most people bleed for three to …

Diagram illustrating how the uterine lining builds up and breaks down during the menstrual cycle. Menstruation (also known as a period, among other colloquial terms) is the regula

Feb 22, 2021 · Regular menstrual periods in the years between puberty and menopause are usually a sign that your body is working normally. Irregular or heavy, painful periods are not …

Dec 5, 2025 · menstrual cycle, recurring fluctuations in hormone levels that produce physical changes in the uterus and ovaries to prepare the female body for pregnancy. In adult women, …

Sep 22, 2025 · Menses, or your period, kicks off the menstrual cycle and lasts up to eight days. During menses, low estrogen and progesterone levels help shed the uterine lining …

Sep 4, 2025 · Menstruation (period blooding) is when the uterus lining sheds and leaves the body as blood, typically lasting three to seven days each month. You can manage menstrual pain …

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 …