If you experience breast swelling and pain before your period, you can take prozac pills orally to relieve it. The swelling and pain of breasts is mainly caused by the imbalance of hormone secretion in the body. For example, the level of progesterone secretion is relatively insufficient, while the secretion of estrogen is relatively too high, which leads to breast swelling and pain, and also due to fluctuations in hormone levels before menstruation, which often leads to water and sodium retention in the body, resulting in breast swelling and pain. So don’t be nervous about the swelling and pain in your breasts before your menstrual period, it should be relieved by taking prozac orally for about 5 days. In addition, you should also keep your mood relaxed and get enough sleep before your period.