The so-called lack of fetal heartbeat is generally divided into two cases, the first is that there has been no fetal heartbeat, and the second is that the fetal heartbeat appears and then disappears, which is called embryonic abortion. If a woman is pregnant and has an ultrasound and finds that there has been no fetal heartbeat, she may not have any special symptoms at this time, only the nausea and vomiting symptoms of early pregnancy reaction are not particularly serious, and the chest swelling and pain is not particularly obvious, but these symptoms have no direct relationship with the fetal heartbeat, so you can’t judge whether there is a fetal heartbeat or not by the symptomatic manifestations. If women check ultrasound after pregnancy, at first found that there is a fetal heart, but due to the abnormal development of the embryo, there is embryonic arrest, then the fetal heart will disappear, and after the absence of the fetal heart, women may appear nausea, vomiting and other early pregnancy reactions suddenly disappear, at the same time there will be a small amount of vaginal bleeding, as well as the performance of the abdominal pain, with the cessation of fetal heart prolongation, abdominal pain and vaginal bleeding will become more and more obvious, because the embryo has been stopped. Obviously, because the embryo has stopped, so often only consider as soon as possible abortion to terminate the pregnancy, because at this time there is no way to make the fetal heart grow back. Therefore, after pregnancy, women must regularly check the ultrasound to confirm the normal development of the embryo.