It is normal to be 6 weeks pregnant without a fetal heartbeat or buds. If the pregnancy is preceded by a disruption in the menstrual cycle, the pregnancy may not have reached 6 weeks, so the fetal heartbeat or buds may appear later. Generally, the sac is formed when the embryo is 30-40 days old, the buds are formed around 40-50 days old, and the heart is formed between 50-60 days old. If you cannot see the fetal heart at 6 weeks of gestation, you need not be nervous, and you can check again a week later. If some women have long or irregular menstrual cycles before pregnancy, it may lead to a deviation in the time of pregnancy, that is, the pregnancy time is too short, and the embryo buds have not yet developed, so they cannot be monitored. In the early stage of pregnancy, women are prone to physical discomfort and vomiting. At this time, the mind and diet should be adjusted in time to replenish all kinds of nutrients needed by the body, which is conducive to the growth and development of the embryo.