If the menstrual cycle is usually regular, with a cycle of 28-30 days once, basically around 40 days after menopause, it is normal to see the echogenicity of the gestational sac through ultrasound examination and the yolk sac can be seen inside the gestational sac. After about six weeks of menopause, the germ can be seen on ultrasound. After seven weeks of menopause, the primordial ventricular pulsation can be seen on ultrasound, which is normal for early pregnancy. In clinical practice, if ovulation is delayed for some reason, the time to see the gestational sac through ultrasound examination will be relatively delayed. Therefore, if you still do not see the germ at six weeks of pregnancy, do not be anxious and check again after five days, and then deal with it according to the results.