There are changes in women’s breasts before menstruation, and the changes in breasts are mainly associated with breast tenderness, which is related to breast enlargement and the state of hormone levels before menstruation. The swelling and pain in the breasts is more obvious in the first few days of menstruation, 1-2 days after menstruation, and will gradually disappear as menstruation slowly clears, and the swelling and pain will be gone when menstruation ends. For periodic breast pain, consider breast enlargement, which is a benign lesion, it is recommended that regular mammography and breast surgery follow up can be done. If you experience breast pain during non-menstrual periods, you should have a detailed examination to rule out other pathologies of the breast.