Failure to have a period for three months after an abortion may be caused by adhesions in the lining of the uterus. If you have persistent pain in the lower abdomen every month after the abortion, but it can be relieved naturally after a few days, you should also consider that it is caused by cervical adhesion due to the abortion surgery. It may also be due to the stimulation of abortion surgery, affecting the normal endocrine function of the ovaries, resulting in after abortion, the ovaries can not normal ovulation also caused by the phenomenon of amenorrhea. You need to go to the gynecology department of the hospital, check the ultrasound and hormones, and make a comprehensive judgment. If the cervical adhesion caused by the lack of menstruation, often in the lower abdomen obvious pain, you can go to the hospital gynecology department to do cervical adhesion surgical treatment, in the adhesion, menstrual blood can be discharged immediately.