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.

Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones.

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.

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.

2017年8月31日 · Blood and endometrial tissue flow down through your cervix and vagina. Why does a period happen? A period releases the tissue that grew to support a possible pregnancy. It happens after each menstrual cycle in which a pregnancy doesn’t occur — when an egg hasn’t been fertilized and/or attached itself to the uterine wall.

2023年3月13日 · During each menstrual cycle, an egg develops and is released from the ovaries. The lining of the uterus builds up. If a pregnancy doesn’t happen, the uterine lining sheds during a menstrual...