Fever can occur when you have your period, and there are more causes caused at this time: a. When you have your period, your body is weaker at this time because your resistance is poorer. If you do not pay attention to keep warm, or even if the change of diet, eating spicy, stimulating food caused by fire, the same will exist during the menstrual fever. Second, there are certain gynecological diseases, if you do not pay attention to the vulva hygiene during menstruation, and at the same time there is an inflammation of the endometrium, it will cause bacterial infection when the menstrual period peeling, may also cause fever during menstruation. Third, in addition to gynecological diseases, there will also exist when the body immunity is low, if there is a decline in resistance, this time there will be the invasion of viruses, will cause the symptoms of the cold, fever. This time as far as possible or to lower the body temperature treatment, otherwise it will affect the health of the body.