Yolk sac not seen at 6 weeks of pregnancy not seen germ needs to be judged according to the pregnant woman’s menstrual cycle, which may or may not be normal, and needs to be rechecked on a regular basis. The yolk sac is the early embryonic tissue. For women with regular menstrual cycles, the yolk sac is usually visible at 5-6 weeks of pregnancy, and the embryo bud and fetal heart are visible at 6 weeks of pregnancy. If the yolk sac and embryo bud are not seen at 6 weeks of pregnancy, it may be due to irregular menstruation, late conception, and the embryo has not yet developed, and the ultrasound can be rechecked regularly. If the yolk sac, embryo bud, and fetal heart are not seen during the rechecking process, then the embryo is sterilized. If the yolk sac is not seen at 6 weeks of pregnancy and the embryo is not seen, the necessary laboratory tests and regular rechecks should be carried out in accordance with the doctor’s instructions, and the next step of treatment should be determined according to the results of the rechecks. If the results of the review can clearly see the fetal heart and germs, it is recommended to have a regular prenatal checkup during pregnancy.