If you have a bloated stomach during menstruation, consider that it may be related to the following reasons: 1, women will have a state of uterine pelvic congestion during menstruation, resulting in an increase in the uterus, thus compressing the bladder and other organs, resulting in a bloated stomach. 2, the abdomen is cold during menstruation, which may also lead to a bloated stomach. 3, due to the decline in resistance during menstruation, the gastrointestinal function will also decline accordingly, and if you eat something that is easy to produce gas or your own diet is not regular, it may also lead to a bloated stomach. 4.It is also possible that there is dysmenorrhea, but the dysmenorrhea is not serious and the symptoms of lower abdominal cramps appear. Therefore, it is recommended to pay attention to rest, eat a light diet, avoid fried, spicy, stimulating food, and massage the lower abdomen to help relieve the symptoms, if the period for a long time bloating or still bloated after the period, you need to promptly check in the hospital to clarify the cause.