It is possible that the swelling and pain in the chest may be caused by menstruation or other reasons, as follows: 1. The unbalanced secretion of hormones in the body of some women leads to swelling and pain in the chest before menstruation. It is recommended that women have an annual gynecological examination, including a local examination of the breast, to find out whether there is a local tumor in the breast, and then give treatment according to the results. In addition, if the chest pain appears before the menstruation alone, and the symptoms of chest pain are significantly relieved after the menstruation, you can take prozac pills for treatment, and pay attention to contraception during the medication.