If a patient wants to monitor ovulation, they can either visit a gynecologist or a fertility doctor. The doctors in these two departments are usually specialized gynecologists, so they can help patients determine when it is appropriate to monitor ovulation. After monitoring ovulation, they can also help patients determine the status of the monitoring, which mainly includes the development of follicles, whether there are dominant follicles, the thickness of the uterine lining, and whether the follicle development and the thickness of the uterine lining are compatible with each other. If there is a problem, is it necessary to use medication to treat it, so the doctors in both departments can provide clear guidance to the patients. If the patient has already chosen a department or a doctor, it is better for the patient to stay with this department and doctor for the next monitoring. This way the doctor will know the patient better and be able to provide systematic guidance, because it is not possible for a patient to monitor ovulation just once, but usually requires 3-5 consecutive monitoring.