The germ of pregnancy will appear around 40-50 days of pregnancy and the germ will appear only after the gestational sac has developed to 1 cm in the uterine cavity. When the germ appears, there will be a gradual beating of the fetal heart, which proves that the development of the embryo is good in the early stage. The irregular menstrual cycle, delayed menstruation or late development of fertilized egg in women may also appear at about 50 days of pregnancy, which is also normal. At 60 days of menopause, the embryonic bud does not appear or the gestational sac appears to be shrunken, which indicates that the embryo has the possibility of abortion, and the blood HCG and progesterone values need to be rechecked, and the low value is expected to be high for the fetus, so the fetus can be kept for treatment first and then observed after 7 days. If there is still no germ after 7 days of observation, or if there is a small amount of bleeding, the pregnancy should be terminated in time.