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 (LMP).

2023年4月22日 · 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 paying attention. Keeping track of your menstrual cycles can help you understand what's typical for you.

Periods are a natural, healthy part of life. They shouldn't get in the way of exercising, having fun, and enjoying life. If you have questions about periods, ask your doctor, a parent, health teacher, school nurse, or older sister.

2022年2月4日 · What is a normal menstrual cycle? You may experience period symptoms before your period starts as part of premenstrual syndrome. Symptoms can vary but may include cramps and breast tenderness....

2022年12月9日 · Menstruation is the monthly shedding of the lining of your uterus. Menstruation is also known by the terms menses, menstrual period, menstrual cycle or period. Menstrual blood — which is partly blood and partly tissue from the inside of your uterus — flows from your uterus through your cervix and out of your body through your vagina.

Menstruation — aka having your period — is when blood and tissue from your uterus comes out of your vagina. It usually happens every month. Problems with your period? For more accurate abortion options, please enter your age and the first day of your last period. Your information is private and anonymous.

2024年10月1日 · Find out about periods, including when they usually start and finish, period products, PMS, getting pregnant, and changes to your periods.