However, there are some women who only see the yolk sac but not the germ. This may be due to the short duration of pregnancy or abnormal development of the embryo. If a pregnant woman undergoes ultrasound examination 4-5 weeks after menopause, only the embryonic sac will be visible at this time. In the case of abnormal embryonic development, if the pregnancy is more than 6 weeks old, the embryonic bud can basically be seen to develop, while if it is not seen during the examination, it should be considered whether the fetus has stopped developing or there is a case of dysplasia, and should receive treatment as soon as possible. If it is determined that the fetus has stopped developing, the only option is to have an abortion in order not to affect the health of the woman. If a pregnant woman finds no germ after 6 to 7 weeks, she should pay attention to the fact that there may be fetal abortion, she can wait for a week and continue to check, and if there is still no germ, she can only choose abortion, otherwise it will endanger the health of the individual.