The fetal germ is 0.7cm, which is about 7 weeks of pregnancy, i.e. about 50 days of pregnancy. In the early stage of pregnancy, the fetal heartbeat and fetal bud is an important indicator to detect whether the fetus has a fetal heartbeat and the length of the fetal bud through ultrasound, through which the development of the embryo can be roughly judged. The relationship between the fetal bud and the date can be roughly estimated by the formula, the fetal bud (cm) + 6.5 is the number of weeks of pregnancy, so when the fetal bud is 0.7cm, it is a little more than 7 weeks of pregnancy, that is, about 50 days. In reality, the size of the germ varies slightly due to each person’s body condition, and the date projected will also vary slightly, which is usually nothing to worry about. As the weeks of pregnancy are relatively small and the placenta is not yet fully formed, it is the time when pre-eclampsia is common. Regular maternity checkups are needed to determine whether the embryo is developing normally through the condition of the fetal heart and bud, combined with the blood hCG and progesterone indicators. Pregnant women can take folic acid supplements under the guidance of doctors, pay attention to avoid strenuous activities in daily life, pay attention to rest, maintain balanced nutrition, and if they have nausea and vomiting as pregnancy reactions, they can eat less and more meals to replenish energy appropriately.