It is normal to have a small stomach as long as the fetus is developing normally, don’t worry, the size of the stomach during pregnancy is related to the body fat and thin, also related to the height, but also related to the size of the fetus, the amount of amniotic fluid and the position of the placenta. It is best to go to the hospital for an ultrasound examination, as long as the size of the fetus is normal and the amount of amniotic fluid is normal, there is no need to worry, it may be a posterior placenta. However, if the small fetal development is caused by low amniotic fluid, this is not normal. It may be caused by prolonged dieting or poor nutrition, and if the low amniotic fluid will affect the fetal development. The fetal malformation can also cause low amniotic fluid, need to strengthen the diet nutrition during pregnancy, at the same time it is recommended to pay attention to reasonable supplementation of trace elements, low amniotic fluid if the fetus is normal, it is best to drink more water, drink more soy milk, but if the fetal malformation is best to induce labor in a timely manner, so as not to affect the baby’s development after delivery.