The woman’s breasts are swollen and painful a few days before her menstruation: 1. It may be due to the increase of estrogen and progesterone in the body, which will promote the development of the breasts. 2. 4. If a woman’s temper is irritable, this phenomenon will also occur when there is an accumulation of liver fire. Therefore, when women have obvious breast pain, they should pay attention to keep their mood calm and wear loose underwear. If necessary, you can also go to the hospital to have a blood test for chorionic gonadotropin level. If pregnancy does not occur, due to breast enlargement and breast nodules, then you need to give blood circulation and blood stasis medication for treatment.