Under normal circumstances, the fetal heartbeat can be seen around 6 weeks of pregnancy. If the heartbeat is not visible at 8 months, it is important to consider the following possibilities: for women who normally have regular menstrual cycles, usually in 28-30 days, the absence of a heartbeat at 8 months is likely to indicate that the embryo has stopped developing. In this case, pregnant women are advised to terminate the pregnancy under the guidance of a doctor. For women who usually have irregular menstruation or long cycles, the lack of fetal heartbeat and buds at 8 months may be due to the late implantation of the fertilized egg, the short period of time of conception, the fetus has not yet developed to a certain extent, and the fetal heartbeat and buds can not be seen in the ultrasound. At this time, pregnant women are advised to take blood HCG and progesterone tests to help understand the intrauterine condition of the fetus. If the test values are not abnormal, it is recommended that a follow-up examination be conducted one week later, at which time it will be considered whether the embryo has stopped developing. If the HCG and progesterone values are abnormal, it is recommended that the fetus be kept alive or the pregnancy be terminated under the direction of the doctor. In addition, if the embryo has ceased to develop at 8 weeks of pregnancy, all the pregnancy reactions of the pregnant woman will gradually disappear. The first is that there is no longer nausea, vomiting and other early pregnancy reactions, followed by a diminished feeling of breast swelling. At this point, it is important to pay attention and be vigilant.