If you experience bilateral breast swelling and pain before each menstrual period, this swelling and pain will be significantly reduced or disappear after the period. This condition is often caused by an imbalance in the level of hormones in the body, such as high secretion of estrogen and low secretion of progesterone. It can be treated with oral prolotherapy pills, and it is recommended to start taking prolotherapy pills after ovulation, that is, during the second half of menstruation, to significantly relieve this painful symptom. If the pain is not relieved by medication, it is recommended to go to the hospital for further examination about 3-7 days after menstruation, which can be done by ultrasound or mammogram. The possibility of organic lesions in the bilateral breast can be ruled out clinically and then treated with medication according to the specific situation.