10 weeks of the fetus in the stomach is generally about 4 cm, the various organs have been formed but not fully mature, the beginning of a certain form. 10 weeks pregnant at this time the gestational sac gradually disappeared, placenta tissue formation, the length of the fetus is about 4 cm, each organ has been formed, from the appearance of the five senses can be seen vaguely, the digestive system and the hands and feet began to develop, the fetus basically has a human body prototype, but the reproductive system, the nervous system and so on are still in the process of differentiation. Ten weeks of pregnancy is an early stage of pregnancy, an important period for the development of the fetal nervous system. During this stage, you must pay attention to diet and nutrition, consume more food rich in protein and vitamins, avoid contact with toxic and harmful substances, and avoid viral infections. During pregnancy, you need to go to the hospital for regular checkups to observe the growth and development of the fetus.