Menstruation usually lasts no longer than a week, and if it comes for two weeks, there is usually a problem. For the reason of prolonged menstruation, the first thing is to observe whether there is any abnormal thickening of the endometrium, such as women with functional uterine bleeding and abnormal endometrial hyperplasia, who are prone to excessive menstruation and prolonged menstruation. Also inflammation of the endometrium and uterine fibroids can affect the amount of menstruation. In addition, some women have discordance with the birth control ring, which can also lead to prolonged menstruation. Too long menstruation can increase the risk of infection and anemia, so it is important to get treatment in time and then to find the cause for the results of this test. In addition, it is important to rest well when you have your period, as poor rest can also affect the duration of menstruation.