Some women need to use medication to promote ovulation because their ovulation condition is not very good, while others cannot determine the exact ovulation time, so they need to use ultrasound monitoring to know. So when is it beneficial for pregnancy to have sexual intercourse under ultrasound monitoring?

If mature follicles are detected during ultrasound monitoring, sexual intercourse can be resumed after stopping the monitoring, and the probability of pregnancy during sexual intercourse is highest within one or two days after that. Because eggs can survive for about 36 hours after being released, the chances of conception during sexual intercourse are relatively high within the following three days.
It is best to wait until around 8 days after menstruation is clean for monitoring, and then monitor continuously at a fixed time every day. If the follicle continues to grow until around 17 millimeters, it should be monitored continuously. When the follicle grows to 20 millimeters, monitor twice a day until ovulation occurs.
Especially for women with regular menstrual cycles, if each cycle is 28 days, high-quality follicles can be observed on the 10th day of menstruation, and under normal circumstances, the follicles at this time are around 13 millimeters. In addition, continuous monitoring is necessary when monitoring follicles, and it cannot be said that ultrasound testing should be stopped just because there are high-quality follicles.