1. The development of the fetus in three months of pregnancy. In the third month of pregnancy, the fetus has begun to form organs and tissues, and the body is gradually taking shape. At this time, the fetus\’s head is relatively large, and its eyes, ears, nose and mouth have been formed. The fingers and toes have also separated and are starting to show fingerprints. In addition, the fetal heart has started beating and can be observed in the B-ultrasound examination. 2. Things to pay attention to during the third month of pregnancy. During the third month of pregnancy, expectant mothers need to pay special attention to their diet and rest. It is recommended to eat more foods rich in protein and calcium, such as beef