Down there generally refers to the perineum. Before menstruation, the perineum may be a lot of water, mainly related to changes in hormone levels. Before the onset of menstruation, affected by fluctuations in hormone levels in the body, women’s vaginal secretions increase, which can be manifested as the phenomenon of a lot of water in the perineum. Some women may also experience increased leukorrhea, chest pain, lower abdomen pain, lower back pain and other discomfort, are normal phenomena. If the vaginal discharge is accompanied by odor, vulvar itching and other uncomfortable symptoms, you should be alert to vaginitis, endometritis, cervicitis and other diseases caused by abnormal phenomena. Before the onset of menstruation, women should pay attention to keeping the abdomen warm and eating a reasonable diet. Women may experience an increase in vaginal discharge before menstruation, so they should pay attention to changing their underwear and keeping their personal hygiene clean.