A lack of progesterone may lead to heavy menstrual bleeding. A woman’s estrogen and progesterone levels drop before menstruation, leading to the onset of menstruation. If menstrual bleeding is infrequent, consider that it may be due to a progesterone deficiency, as a lack of progesterone can result in the lining not being repaired, leading to infrequent menstrual bleeding. This condition is common in adolescent or anovulatory dysmenorrhea women, because there is no ovulation for a long time, so the ovaries can not secrete progesterone, resulting in low levels of progesterone, which leads to abnormal uterine bleeding phenomenon, the bleeding time will usually be longer, and if serious, may even cause anemia. In addition, the cause of more than menstrual bleeding may be short-term endocrine disorders caused by staying up late and stressing out. In this case, the bleeding usually stops on its own after a few days, but the possibility of organic diseases such as uterine fibroids cannot be ruled out. If you have occasional menstrual bleeding, you can adjust your work routine, eat a light diet and observe for a while. If the bleeding continues for a longer period of time, it is recommended to go to the hospital for ultrasound of the uterus and both adnexa, and sex hormone six tests to determine the cause of the bleeding.