Follicular monitoring is a specialized ultrasound-based method used to track the growth and development of ovarian follicles during a woman’s menstrual cycle. It helps identify the exact time of ovulation, which is crucial for natural conception, timed intercourse, intrauterine insemination (IUI), and IVF treatments. By closely observing follicular size, endometrial thickness, and ovulation patterns, doctors can accurately determine the most fertile window and guide appropriate treatment decisions.