Pregnancy is an issue of great concern to every pregnant mother, both excited and nervous, always concerned about the development of the fetus in the belly, so how big is the fetus in the second month of pregnancy? By two months of pregnancy, the early embryo looks more and more like a baby at this time, the fetus’ hands and feet begin to differentiate, and by the end of two months, the hands and feet are basically formed, and the face can basically see the eyes, nose and mouth, at this time, the fetus has the initial movement on its own, but because the fetus is small, the pregnant mother is not aware of it yet. When the pregnancy reaches about 5 weeks, the embryonic neural tube gradually takes shape, and these neural tubes gradually develop into the brain and spine later on. Therefore, in the early stage of pregnancy, pregnant mothers should pay attention to supplementing proper nutrition, protein and fat, and also need to take 400ug of folic acid every day, and pregnant mothers can eat more foods such as green vegetables, bananas and milk, and also need to supplement folic acid tablets. At about 7 weeks of gestation, the fetus is 2-3 cm and 4g in weight, and the systems and organs have basically started to develop, but of course they are not perfect. The placenta gradually forms, and the placenta gradually becomes the main link between the mother and the fetus, and thereafter, the main nutrients for the fetus are provided by the placenta. During this period, pregnant women still need to pay attention to avoid overexertion, take more rest, avoid ascending to heights or strenuous activities, avoid crowded places, avoid sitting and standing for a long time, pay attention to keeping warm, pay attention to avoiding colds, because this is an important period for embryo division and brain development, the formation of various organs, avoid contact with harmful substances, and do not take drugs easily. If abdominal pain or abnormal vaginal bleeding occurs, go to the hospital promptly.