On the issue of causing multiple pregnancies: 1. Multiple pregnancies occur in about 4-9% of cases after clomiphene treatment, especially in polycystic ovary syndrome after the use of the drug is more common, with the majority of twin pregnancies. 2. About 15%-20% of miscarriages occurred after clomiphene, and about 5% of fetuses were congenitally malformed after using the drug, which is not significantly different from those treated with other methods due to infertility. 3. Regarding the problem of ovulation but no pregnancy: In general, the rate of ovulation induced by the drug is much higher than the rate of pregnancy, and the rate of ovulation is about 70-80%, while the rate of conception is only about 20%. 4. The reason for this situation may be related to the fact that the drug inhibits the secretion of estrogen and thickens the cervical mucus. In order to solve this problem, we also use ovulation promotion capsules, which significantly improve this phenomenon and greatly increase the conception rate, solving this problem that has existed for many years.