Menstruation is delayed for ten days, but the urine pregnancy test is not pregnant, mainly suggests two possibilities: first, the results of the test is not accurate, the patient has been pregnant but did not check out, this situation is the need for further examination, you can check the blood chorionic gonadotropin, you can also test the urine pregnancy test every other day. The specific detection time is mainly based on the patient’s last intercourse time as a standard, generally speaking, the patient’s last intercourse more than half a month later to be able to accurately determine whether the patient is pregnant. Second, the main indication that the patient is not pregnant, there is a delay in menstruation. In this case, the patient needs to do ultrasound to observe the thickness of the endometrium, if the thickness of the endometrium reaches 1.0cm, you can wait for menstruation. If the thickness of the endometrium is <0.8cm, medication can be used to promote menstruation.