Heavy bleeding during menstruation may cause symptoms that are a little more obvious, causing severe abdominal pain. Frequent contractions of the uterus may cause accelerated shedding of the endometrium, resulting in increased bleeding, accompanied by large amounts of blood clots and meconium tissue, and the amount will be similar to or even more than the amount of menstruation, and will occur not only on the second day, but also on the third and fourth days. The normal cycle is over in 3-7 days, but heavy bleeding may be continuous and the amount of bleeding may be greater than the amount of menstruation, which should be taken seriously. This is because frequent heavy bleeding can cause infection and even anemia. It is recommended to go to the hospital for an ultrasound to determine the thickness of the endometrium, and depending on the situation, endometrial scraping can be used to stop the bleeding, or oral medication can be taken to stop the bleeding.