It is best to use ultrasound to monitor the growth and development of the follicles and ovulation. Ovulation shots are usually given with human chorionic gonadotropin, a drug that promotes luteinizing hormone, which in turn promotes the rupture of mature follicles for ovulation. The ovulation test paper is used to determine whether ovulation is occurring by detecting the peak of luteinizing hormone. If you continue to use the ovulation test paper after the injection, you may get a false positive. However, it is not easy to determine whether it is the effect of medication or the physiological rise of luteinizing hormone, so it is meaningless to use ovulation test strips to monitor ovulation in this case. Ovulation normally occurs within 1-2 days after ovulation injection, so you can increase the number of sexual intercourse during this period to improve the chance of conception.