Do you need to hold urine to monitor follicles?

Follicle monitoring does not require urine retention. It is best to perform vaginal ultrasound to monitor follicles because it is more accurate. Urine should be drained before ultrasound. Follicle development can be monitored by ultrasound to guide the timing of coitus. Follicle size, endometrial thickness and type are generally monitored on the 10th-12th day of menstruation. When follicle diameter is 10-12mm, it can be monitored every three days. Follicles 12-15mm in diameter can be monitored every two days. Follicles>15mm can be monitored daily. It should be emphasized that dominant follicles are 10-12mm in diameter, while mature follicles are 18-24mm in diameter. Ovulation monitoring can guide the timing of coitus.