It is incorrect to say that vomiting is the presence of a fetal heartbeat, as there is no direct relationship between the two. The emergence of pregnancy vomiting does not necessarily mean that there will be fetal heart, some pregnant women pregnancy vomiting time appears early, some pregnancy vomiting time appears late, there are no pregnancy vomiting, but the fetal heart, fetal buds normal. In general, most pregnant women in the normal menopause 6 weeks or so will appear in the reaction of pregnancy vomiting, a few people in the menopause 4 weeks, can appear nausea, vomiting, but do ultrasound, but did not see the fetal heart, there are some people throughout the entire pregnancy does not have any reaction to the pregnancy vomiting, but do ultrasound, the fetal heart, the fetal buds are very normal, can not be based on the time of the emergence of the time of the appearance of pregnancy vomiting, to deduce the emergence of the time of the fetal heart. To find out if there is a fetal heart, you can go to the hospital around 7 weeks of pregnancy and have an ultrasound to determine this. If a woman who normally has a regular menstrual cycle does not have a fetal heartbeat or buds after 8 weeks of menopause, the fetus may be underdeveloped, and termination of pregnancy should be considered if necessary. During pregnancy, it is necessary to go to the regular hospital for obstetric examination regularly, and find abnormalities and deal with them in time to avoid adverse consequences.