There is still a lump of blood clots after eight or nine days of menstruation may be the cause of uterine fibroids, functional uterine bleeding, uterine adenomyosis, etc., which need to be analyzed specifically. 1. Uterine fibroids: If the position of uterine fibroids is close to the endometrium, it may affect menstruation and prolonged menstruation with blood clots may occur. 2. Functional uterine bleeding: If the endocrine hormones of women are disturbed, it will affect the normal shedding of the endometrium, and functional uterine bleeding will occur, resulting in prolonged menstruation with blood clots. 3. Adenomyosis: If adenomyosis exists in the uterus of a woman, and the menstrual blood is not discharged properly, it will cause excessive contraction of the uterus, resulting in prolonged menstruation and a large number of clots, which will also be accompanied by obvious menstrual pain. If a woman’s menstrual period is eight or nine days old and there is still a block of blood clots, there may be other reasons, you need to further medical examination to clarify the cause of the disease, to avoid delays in the condition. At the same time, you need to pay attention to warmth and personal hygiene during menstruation, eat less spicy and stimulating food, and appropriate activities to enhance resistance.