The presence of dribbling menstruation and dark color suggests the presence of menstrual irregularities. First of all, we need to clarify the main causes of irregular menstruation. You can go to the hospital for an ultrasound examination to find out the condition of the uterus, whether there are fibroids, birth control rings, and to clarify the thickness of the endometrium. If there are uterine fibroids or uneven thickness of the endometrium, and there is no ovulation or displacement of the birth control ring, etc., it can lead to the occurrence of menstrual dribbling. If these conditions are the cause, we can consider removing the IUD, if the endometrium is not uniformly thick, we can do diagnostic scraping, and if there are uterine fibroids or adenomyosis, we can consider surgical excision. If you exclude these factors, you need to draw blood to check the endocrine, to clarify whether there is abnormal secretion of reproductive hormones or thyroid function problems, if it is caused by the endocrine, you need to adhere to the medication to regulate in order to stop bleeding.