The early pregnancy ultrasound order will describe the size of the gestational sac and a picture of the sac will be taken on the ultrasound screenshot where a dark black area can be seen within the uterine cavity. At around 5 weeks of pregnancy, the gestational sac can be seen in the uterine cavity on the ultrasound, and at around 6 weeks of pregnancy, the embryonic buds and primordial heart tube pulsations can be seen. Generally the shape of the sac is mostly round or round-like, as well as oval. The shape of the gestational sac is informative about the outcome of the pregnancy, but not absolute. The development of the embryo is mainly based on the ultrasound measurement of the size of the gestational sac, to observe whether the gestational sac has grown, to a certain time whether there are germs and primitive heart tube pulsation and other data changes, and timely detection of defects in the development of the fetus. After pregnancy, pregnant women should regulate their own body, eat a light diet, pay attention to rest, avoid exertion and staying up late. Any discomfort such as abdominal pain or vaginal bleeding requires immediate medical attention.