Feeling soreness in the lower back before menstruation is usually a manifestation of menstrual syndrome. The pelvic cavity will be congested with blood before menstruation, and the abdomen will be swollen. If you are often tired and overexert your back, you will feel sore and swollen, which is a normal physiological phenomenon and will be gradually relieved after menstruation. If it is accompanied by vaginal itching, pain and other symptoms are caused by gynecological inflammation, pelvic inflammatory disease, vaginitis, before the menstrual period, the infection is easy to inflammation and symptoms such as lumbar acidity, abdominal drop. Low body immunity, cold, cold or often eat cold, cold food, before the menstrual period will also have lumbar soreness, often have lumbar abdominal soreness, irregular menstruation to the hospital to investigate the cause, targeted medication. Pay attention to the routine in daily life, do not have sex during menstruation, do not eat spicy, stimulating and too greasy food.