The majority of women will have the following symptoms before menstruation: 1. Increased vaginal discharge before menstruation, mainly because the endometrial glands secrete vigorously before menstruation, so it will lead to increased vaginal discharge; 2. Mild swelling and pain in the lower abdomen before menstruation, mainly because the pelvic cavity starts to be in a state of congestion before menstruation, so there will be mild swelling and pain in the lower abdomen; 3. Some women may experience breast pain before menstruation, mainly because estrogen secretion is strong and progesterone secretion is relatively low. Other women may experience insomnia, dreaminess, irritability and other mental symptoms. It is recommended to keep warm before menstruation to avoid the possibility of getting cold and causing dysmenorrhea in clinical practice.