In clinical practice, there are many drugs that can delay menstruation, most of them are progestin or estrogen-based drugs. Most of them are progestin or estrogen-based drugs, such as Daing 35, Eusyn, or fenmatone, dydrogesterone, progesterone and so on. Progesterone is used one week before menstruation, twice a day at 100 mg. Patients need to use it during the entire period of delayed menstruation, and can stop using it after the period is delayed, and usually menstruation will come after a week or so. Many patients may experience dizziness and discomfort after using progesterone, which is a normal reaction. This is a normal reaction. If the symptoms are mild, it can be left alone, but if the symptoms are more serious, you can switch to dydrogesterone. The side effects of dydrogesterone are relatively minor, and it is also used one week before menstruation, twice a day at 10mg once, during the period of delayed menstruation, and one week after stopping the medication for menstruation.