For women with polycystic ovary syndrome or ovarian luteinization syndrome, ovulation induction may be considered in cases of fertility because they may not ovulate naturally. The success rate of pregnancy with ovulation induction is basically around 60%-80%, because there are many factors that affect pregnancy and each woman has different sensitivity to ovulation induction drugs, so it is not possible to have 100% success in pregnancy after ovulation induction. In some cases, even if the pregnancy is successful, the embryo may not be of good quality or the hormone level in the body may be poor, which may lead to spontaneous miscarriage or even embryonic abortion. Therefore, even if a pregnancy is successfully conceived after ovulation, it is still necessary to check the ultrasound regularly to see how the embryos are growing and developing. If necessary, progesterone can be used as a precautionary measure to preserve the pregnancy.