Menstrualperiod

The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that ...

A period is a release of blood from a girl's uterus, out through her vagina. It is a sign that she is getting close to the end of puberty.

2017年5月22日 — Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every month, your body prepares for ...

2022年12月9日 — A normal menstrual cycle can last between 21 and 35 days. You can expect to bleed between three and seven days each time you get your period.

The menstrual cycle is a natural process. It is a complex cycle controlled by female hormones that cause regular bleeding (periods). The menstrual cycle has ...

Women who have a regular, 28-day cycle are likely to be fertile around day 14 of their menstrual cycle, but this won't apply to women whose cycles are shorter ...

A period is the part of the menstrual cycle when a woman bleeds from her vagina for a few days. For most women this happens every 28 days or so, ...

The first day of menstrual bleeding is considered Day 1 of the cycle. Your period can last anywhere from 3 to 8 days, but 5 days is average. Bleeding is usually ...