A pregnancy test can be performed once the fertilized egg has been laid. The secretion of human chorionic gonadotropin begins six days after fertilization, at which time it can be detected in the blood and can clarify whether or not the pregnancy is normal, but not whether it is. Therefore, in order to avoid the possibility of ectopic conception after pregnancy, a vaginal ultrasound should be performed at 4-5 weeks of menopause, and the changes in HCG and progesterone values in the body should be monitored, and some women may experience biochemical pregnancy. The main symptoms of pregnancy include menopause and early pregnancy reaction, frequent urination, breast tenderness, and deepening of nipple and areola coloring. However, these clinical manifestations are not specific and have a high degree of error. At present, the most accurate test is the HCG test and ultrasound.