After stream of people comes menstruation blood black how to return a responsibility less

After artificial abortion, less menstrual volume and blackening may be caused by cervical adhesion, cervical adhesion is a common postoperative complication, which can lead to female amenorrhea, periodic abdominal pain, etc., menstrual blood color blackening may not recover hormone level in the body, thin endometrium caused, it is recommended to see a doctor for gynecological examination and symptomatic treatment.