It is not clear how many days after menstruation a woman will have chest pain, some women will have chest pain 2-3 days after menstruation and many women will not have chest pain. If chest pain occurs after menstruation, it may be caused by breast hyperplasia, it is recommended to go to the hospital to do breast ultrasound or molybdenum target examination to confirm the diagnosis, if it is breast hyperplasia, you can be treated by taking breast quenching elimination or free pills, and at the same time to maintain a happy mood, avoid anxiety, depression and other bad emotions, usually wear appropriate clothing. Many women experience chest pain before menstruation, mainly caused by hormonal changes in the body, which is a normal phenomenon.