When a woman undergoes a semi-quantitative ovulation test, she can choose to have sex if the test is strongly positive. A strong positive test means that the follicles of the ovaries have developed and the eggs have been released. Sexual intercourse in the presence of ovulation can significantly increase the probability of conception. The semi-quantitative ovulation test is a method to detect ovulation. Patients can also choose to go to the obstetrics and gynecology department of the local public hospital for an ultrasound monitoring of the ovaries to clarify the development of the ovarian follicles. When the follicles reach about 18-20mm, the possibility of ovulation is higher. Therefore, it is also possible to have sex according to the ultrasound examination of ovulation to increase the possibility of conception.