The fetus is still unstable in the 70th day of pregnancy, because the fetus is unstable in the early stage of pregnancy, that is, in the first 12 weeks of pregnancy, and is prone to miscarriage and other accidents. Therefore, you need to pay special attention to the early stage of pregnancy, avoid overwork, avoid abdominal trauma, pay attention to any abdominal pain and vaginal bleeding. During pregnancy, you should avoid exposure to harmful substances, take folic acid supplements on time to avoid neural tube defects, and have regular prenatal checkups to understand the development of the fetus. Take care to consume high quality protein and adequate amount of calories to provide sufficient amount of calories for the fetus to grow and develop. You may have early pregnancy reactions in the early stages of pregnancy, so you should pay attention to a reasonable diet, eat small and frequent meals, and avoid consuming too greasy and indigestible food to prevent aggravating the discomfort.