Ultrasound to monitor ovulation is a process and it is generally recommended that on the 10th day of menstruation, you start visiting the hospital and come in for a transvaginal ultrasound every other day to monitor follicular growth and development and continue until ovulation is complete. Normal women usually ovulate on the 15th day of menstruation, and the time for ovulation may be prolonged if menstrual irregularities occur. For women of childbearing age, it is generally recommended that they keep a record of their menstrual cycle, as they will have their period on the 15th day after ovulation, and if they have regular periods, they will be able to predict the approximate time of ovulation. If a woman wishes to conceive and chooses to monitor her ovulation, she can first visit the Gynecology and Reproductive Medicine Clinic. Based on the regularity of her menstrual cycle, the outpatient doctor will estimate the approximate time of ovulation, the number of days after her menstrual cycle, and then perform ultrasound monitoring of ovulation accordingly.