Depending on the individual case, eggs can be retrieved within 7-15 days from the injection of gonafem, and as early as 7 days. Gonafem is an ovulation stimulant for follicle growth before IVF, and its main purpose is to promote follicle development. Depending on the individual’s body type, the dosage of the injection varies and the time of egg retrieval varies, with egg retrieval possible within 7-15 days. If the follicles are well developed, the growth of mature follicles can usually occur within 7 days after the injection of gonafem, but most of the ovulation promotion time is usually around 13 days, which varies from person to person. When the follicles reach about 2.0 cm, the follicles can be detected by ultrasound and the right time can be chosen for egg retrieval. It should be noted that gonafem is a hormonal drug and the dose of injectable drug should not be too high and should be used according to the course of treatment. In addition, you should start with a low dose of gonafem under the guidance of your doctor, and take rest and stop exercising and working out during the injection period.