Most women are prone to some premenstrual symptoms, such as edema, which is related to the retention of water and sodium caused by progesterone. Generally, it is obvious that there is edema of hands, feet and eyelids, and the weight will also increase significantly, After menstruation, edema disappears and weight gradually returns to normal. In addition, women have headache before menstruation, even accompanied by nausea and vomiting, or pain in the lumbosacral region and tummy due to pelvic congestion. In addition, breast pain is also the most obvious symptom before menstruation, which may last for about seven days.