Most women have chest swelling before menstruation, which is a normal physiological phenomenon: 1. It may be due to the increase of estrogen and progesterone in the body, there is breast enlargement, so women will show chest swelling. The woman should pay attention to wear loose underwear, pay attention to proper rest, after the onset of menstruation chest swelling will be relieved. 2, may also be women in the menstruation before the temper, liver qi stagnation caused by chest swelling. 3, if women have breast enlargement, breast nodules, will also appear to have chest swelling pain. If the symptoms are not relieved, you can also go to the hospital for an ultrasound examination of the breast if necessary. If you are suffering from breast disease, you can be treated with blood circulation and stasis-boosting medications such as Blood Mansions and Stasis Capsules and Breast Fetish Elimination. For larger enlarged breast nodules, surgical removal is required.