In the 8th week of pregnancy, the fetus in the mother\’s body has begun to take on a human shape, and its limbs have been formed, but it is not yet able to move. At the end of the 12th week of pregnancy, the limbs are basically fully developed and begin to move, but the activity at this time is very weak and difficult for the expectant mother to detect. Until the 1620th week of pregnancy, the mobility of the fetus\’s limbs gradually increases, and sooner or later, all pregnant women can feel the movement of the fetus in their abdomen. Although the movement may be very light at first, the special feeling of fetal movement can bring a lot of shock and joy to expectant mothers: the baby can move in the womb!