The irregular menstruation can be caused by pregnancy, endometrial lesions, irregular menstruation, coagulation disorders, organic pathologies such as fibroids, submucosal fibroids, etc. The first thing you need to do is to check the HCG value to rule out the possibility of pregnancy. If the blood HCG value does not rise, exclude the possibility of pregnancy, you need to further check the gynecological ultrasound, if the gynecological ultrasound endometrial thickening or accompanied by uterine submucosal fibroids, endometrial polyps, etc., in this case you need to further check the hysteroscopy and diagnostic scraping surgery, according to the postoperative pathology to decide how to treat the next step. Menstrual irregularities come and go, if the exclusion of organic pathology, exclude the pregnancy, you can choose to use progesterone to withdraw blood treatment, such as the application of progesterone injection. If you observe the vaginal bleeding after progesterone application, if the menstruation clears on its own within 10 days, no special treatment is needed.