When does B-ultrasound monitoring of ovulation begin?

If you want to use B-ultrasound to monitor whether you are in ovulation or when ovulation occurs, it is recommended to start monitoring on the 10th-12th day of menstruation. When you see follicles with a diameter of more than 10mm during B-ultrasound monitoring, check them every 4 days. When the follicle diameter reaches about 14mm, check every other day. When the follicle reaches more than 18mm, the follicle matures and shows dominant follicles, and ovulation occurs. This is the best time for pregnancy. You can increase the frequency of sexual life appropriately. If you think B-ultrasound monitoring is too troublesome, you can also use ovulation test paper to monitor.