Daing-35, or ethinyl estradiol cyproterone tablets, is an estrogen and progestin combination that is used for oral contraception and also for the treatment of androgen-dependent disorders in women. The reasons for not getting menstruation after using the drug are different according to the situation of taking the drug, and can be discussed separately. I. No menstruation during the use of the drug: during the use of the drug, due to the hormonal effect, there is usually no menstruation or vaginal bleeding, which is a normal pharmacological phenomenon and does not require special treatment. If you don’t get a period after stopping the pill, you should go to the hospital for blood HCG test and ultrasound examination to decide whether you can continue the pregnancy; 2. Hysteroscopy should be done to confirm the diagnosis. The diagnosis can be confirmed by blood test of sex hormone six and ultrasound, and ovulation treatment and immunotherapy can be chosen.