Period Of A Trigonometric Function (expression)

The first day of menstrual bleeding is the date used for the last menstrual period (lmp). Menstruation — aka having your period — is when blood and tissue from your uterus comes out of your vagina. Dec 10, 2025periods, also known as menstruation, occur when your uterus sheds its lining, causing blood and mucus to discharge from the vagina.

Jan 11, 2026menstruation (or period) happens monthly. Your menstrual cycle begins on the first day of your period. Sep 4, 2025menstruation 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.

Apr 20, 2025the menstrual cycle is about four weeks long, starting on the first day of bleeding and ending when the next period begins. However, it can vary greatly when girls first starts their period. Jan 13, 2025a menstrual cycle begins with the first day of your period, or menstruation [men-stroo-ay-shuhn] and starts over again when the next period begins.

Luteal and follicular phases, ovulation, periods, fertility, symptoms, cramps, and much more! The menstrual cycle is counted from the first day of one period to the first day of the next.