The menstruation, also called period or cycle, happens when the lining of the uterus is shed. It exits your uterus as blood and tissue that flows through the cervix out of your vagina. Menstruation happens in the menstrual cycle, usually taking place once per month. The average menstrual cycle is 28 days long, but it can vary between 21 and 45 days. Menstruation usually lasts between 2 and 7 days, but it can last for up to 2 weeks. If you’re on birth control or have an IUD, the timing of your period can be very different. Overall, it depends from person to person how heavy, light or painful their menstruation is. There are a number of menstrual disorders that can influence your menstrual cycle.
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- WebMD. What Is a Normal Period? https://www.webmd.com/women/normal-period (accessed 6. August 2020)