Breast swelling and pain that occurs 10 days before menstruation is often caused by an imbalance in the body’s hormone levels, such as a high secretion of estrogen as opposed to a low secretion of progesterone, and then breast swelling and pain occurs. This condition is often also accompanied by emotional changes, such as easily emotional, more sensitive, love to lose temper, and some people may experience insomnia. It is recommended to take oral prolotherapy pills for treatment before menstruation, and it is also recommended to take vitamin B1 and vitamin B6 supplements, which can effectively relieve breast swelling and pain before menstruation. In addition, ensure sufficient sleep and maintain a happy mood to make the body’s hormone level secretion more balanced.