If it comes to the time of menstruation to come a day there is no menstrual blood. It may be caused by the following reasons: 1. Because of drinking a lot of frozen drinks or eating a lot of cold food at the time of menstruation, which suddenly makes the blood vessels contract, clinically the menstruation does not come, there is no vaginal bleeding. 2. caused by pregnancy, after pregnancy, when the vaginal bleeding occurs again at the time of menstruation, this time it is recommended to go to the hospital to do a laboratory test of blood HCG, according to the results and then The next step will be decided according to the results. If pregnancy is ruled out, you can drink hot brown sugar and ginger water and observe whether your period will come back.