If the ultrasound indicates that the follicle is larger than 18mm in diameter, you can use HCG 10000 units intramuscularly and have intercourse about 34 hours later, and check the ultrasound 2 days after the intercourse. Repeat the ultrasound to see if the follicle has been ovulated. After intercourse, you can add progesterone capsules, 4 tablets per night, or Daphne, one in the morning and one in the evening, to improve luteal function for 10 days. On the last day of medication, check the urine pregnancy test, which is early pregnancy, if it is positive, continue with progesterone or Duffetone, but follow up with blood HCG, usually the HCG indicator doubles every other day, otherwise ectopic pregnancy should be ruled out. You can check the negative ultrasound at 40 days of menopause to rule out ectopic pregnancy.