It is normal to have menstruation after 3 months of breastfeeding, some menstruation can be restored within 1 month after delivery, while some menstruation can be restored only after 1 year after delivery. As long as there is no abnormality when menstruation comes, there is no need to worry. It is better to observe the amount of menstruation. If the amount of menstrual blood is high or the blood is black, it may be the residual malodorous dew in the uterus, which is normal to be discharged through the first menstruation, and it is necessary to observe the second time to return to normal. Excessive bleeding with abdominal pain is considered to be caused by uterine fibroids or cysts, you can go to the hospital for ultrasound examination, if necessary, through surgical treatment, but also need to use under the guidance of the doctor to stop bleeding drugs such as uterine blood capsule, so as not to cause anemia or other diseases.