Women in the menstrual period is also in the menstrual period before the abdominal distension is not normal, the reason is: 1, may be in the menstrual period before the body of estrogen and progesterone decline, resulting in pelvic organ congestion, will feel bloating, but the bloating of the abdomen is not very obvious. 2, may be in the menstrual period just before the consumption of greasy food or unclean food, resulting in gastrointestinal indigestion of stomach bloating, also can appear. Bloating can also occur. When the situation of abdominal distension should pay attention to appropriate rest, you can eat more easily digestible food, pay attention to warmth, walk properly can be relieved, if not able to relieve the need to go to the hospital to do a checkup to see whether there is a pelvic mass.