If there is no lacrimal-like white band during ovulation, it is clinically possible that ovulation is not occurring and it is recommended that this can be monitored by ultrasound. For example, you can start monitoring ovulation by ultrasound on the 12th day of menstruation and have an ultrasound on the 14th and 16th day of menstruation to see if the follicles are growing and ruptured to expel the eggs. If there is no follicle growth even by ultrasound, it is recommended to take a sex hormone test and then give an ovulation treatment if necessary according to the results. It is also necessary to do health checkups before ovulation treatment, such as liver and kidney function and thyroid function, before ovulation treatment can be given. During the ovulation treatment, the growth and development of follicles should also be monitored by ultrasound.