Patients taking ovulation drugs, stopping the drug about 4 days will occur ovulation, need to start taking the 5th day of menstruation, and take 5 consecutive days, after stopping the drug can be observed follicle development and change situation. After stopping the medication for 5 days, the follicle development will gradually mature and enter the ovulation state. During the ovulation period, you need to carefully observe the follicle development and changes through ultrasound, the follicle with more advantages grows faster every day, and the growth and development will have a chance of ovulation if it grows to more than 2.0cm, and the follicle volume is bigger after using ovulation-promoting medication, which is probably more than 2.5cm. When taking ovulation drugs, pay attention not to take casually, if not in accordance with the doctor’s instructions, randomly take ovulation drugs will appear irregular menstruation, premature ovarian failure.