For this case, first of all, we need to exclude the delay of menstruation caused by pregnancy. If the patient has reproductive requirements, further gynecological ultrasound, blood HCG, progesterone, according to the results of the examination, to decide whether to rest the fetus, whether to supplement progesterone treatment. If the patient does not have fertility requirements, it is also necessary to draw blood to check blood HCG and gynecological ultrasound. If the gynecological ultrasound suggests early intrauterine pregnancy, the pregnancy needs to be terminated as soon as possible; if the blood HCG value suggests that there is no pregnancy, in this case, it is necessary to further give dextroprogesterone 10 mg twice a day for 10 days, and stop waiting for menstruation, and most of the time, within two weeks of stopping the medication, menstruation will be experienced.