2022年12月9日 · What is a menstrual cycle? The menstrual cycle is a term to describe the sequence of events that occur in your body as it prepares for the possibility of pregnancy each month. Your menstrual cycle is the time from the first day of your menstrual period until the first day of your next menstrual period.

2023年4月22日 · The menstrual cycle is counted from the first day of one period to the first day of the next. The cycle isn't the same for everyone. Menstrual bleeding might happen every 21 to 35 days and last 2 to 7 days.

Triggered by falling progesterone levels, menstruation (a "period", in common parlance) is the cyclical shedding of the lining, and is a sign that pregnancy has not occurred. Each cycle occurs in phases based on events either in the ovary (ovarian cycle) or in the uterus (uterine cycle).

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.

2023年4月21日 · Menstruation, or periods, usually happen once a month during the reproductive years, except during pregnancy. It is when the lining of the uterus sheds, breaking down into …

2024年2月29日 · Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every month, your body prepares for pregnancy. If no pregnancy occurs, the uterus, or womb, sheds its lining. The menstrual blood is partly blood and partly tissue from inside the uterus. It passes out of the body through the vagina.

2023年10月31日 · 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 a natural part of life. Throughout the month, your uterus builds up its lining to support a possible pregnancy.

2024年9月27日 · Menstrual regularity is defined by the variation in cycle lengths from one cycle to the next. Although slight variations in cycle lengths are normal, cycles are considered regular if the difference between the shortest and longest cycle lengths is 7 days or less for individuals aged 26 to 41 and 9 days or less for those aged 18 to 25 or 42 to 45.

Discover all 4 period phases and learn what happens during each stage of your menstrual cycle. Expert guidance on symptoms, duration, and self-care tips for each phase.