Whether or not you can have children depends first on whether or not the woman has ovulated, so you have to test the development of the follicles. The time to check the follicles is from the first day of menstruation, and then the first ultrasound examination starts on the tenth day, and then the next visit is decided according to the development of the follicles in the first examination. The other test is to see if the fallopian tubes are open. This is a minor procedure that is done in the hospital 2-3 days after menstruation. The condition of the uterine cavity is also looked at, usually by ultrasound, to see if there are fibroids and other conditions.