If there is a delay in menstruation, you need to first observe the number of days delayed. A delay of 7 days or less is normal, and you can continue to observe whether your period will come. If it is delayed for more than 7 days, married or sexually active women need to further rule out pregnancy. You can buy your own pregnancy test paper to check whether you are pregnant, or go to the hospital to take blood HCG to further confirm. Test strips have a certain degree of inaccuracy, but blood tests are the most accurate and the earliest way to confirm pregnancy. If you are pregnant, you need to choose whether to continue the pregnancy or terminate it according to your own needs. If you are unmarried and have never had sex or have ruled out the possibility of pregnancy, the most likely cause of delayed menstruation is a menstrual disorder. You can go to the hospital for an ultrasound to check the thickness of the uterine lining to see if you are about to have your period. Depending on the condition of the lining of the uterus, you can choose whether or not you need to use medication. It is best to take a fasting blood test for sex hormone six on the 2nd to 4th day of your next period to further confirm the cause of delayed menstruation.