If there is no withdrawal of bleeding after stopping progesterone, on the one hand, it may be pregnancy, and on the other hand, it should be considered that there is a problem with the uterus, because there is no bleeding after pregnancy. In addition, if the endometrium has lesions, there will also be no bleeding, especially some women have had multiple abortions, resulting in damage to the endometrial basal layer, the endometrium will be adherent to form scars, so such women often have no withdrawal bleeding, first of all, you should take a urine test. If you are not pregnant, you need to go to the hospital for an ultrasound to observe the thickness of the endometrium. If the endometrium is very thin, you need to take estrogen therapy under the guidance of your doctor.