The fact that the fetus prefers to bulge on the right side generally indicates that the fetal limb is on the right side, which is normal. The bulge on the belly of pregnant women that people see is usually caused by the activity of fetal limbs. Generally to the late stage of pregnancy, the position of the fetus has been relatively fixed, many of the fetus in the mother’s body in the left occipital anterior position, limbs are located in the right side of the pregnant woman’s stomach, so the fetus limb activity is generally on the right side. When the fetus activity limbs, sometimes can be found in the right side of the pregnant woman’s stomach bulge, while pregnant women can often feel obvious fetal movement, this is generally a healthy fetus normal activity phenomenon, do not need to worry about it. Pregnant women can appropriately interact with the fetus to increase affection when the bulge appears on the stomach.