What to do if your period is delayed for 5 days, depending on the situation there are mainly the following solutions:: 1. Reproductive age: First rule out pregnancy, the possibility of pregnancy is very high. Do an ultrasound to look at the endometrium and test for a drop in progesterone after giving progesterone. When the progesterone level drops, it is possible to have delayed menstruation when menstrual disorders occur. It is also possible that functional menstruation is delayed due to exertion or nervousness, and an ultrasound can clarify whether there is an organic problem. 2. perimenopause: check the endocrine and ovarian reserve function, if the ovarian function is declining, it indicates that it is going to enter menopause. 3. amenorrhea: the menstrual cycle is prolonged until amenorrhea, not only check the ultrasound but also check the endocrine 6 items to see if the ovarian function is in a declining state. Everyone may have delayed menstruation. If this happens, one can take Chinese herbal medicine to regulate, and then another is to relax and balance the mind, no need to be too anxious.