Some women experience mood swings during menstruation. Some women have PMS during the premenstrual period because of excessive exertion, mental stress, and other factors that can cause distress, confusion, and chest tightness, difficulty breathing, or mood swings, all of which are related to hormone levels in the body, mainly estrogen and progesterone in the body that cause mood swings. However, there are some fluctuations that occur during menstruation as well, called PMS. If the fluctuations are high, oral medication is needed to regulate the nerves, and then self-control is needed to adjust the emotions. You can take rest during your period, listen to music to relax your mental tension, avoid too much exertion, and ensure sleep.