The baby’s external genitalia are basically developed, and the baby’s gender can be initially identified from the appearance, and the baby’s limbs can start to move. In general, in this month, a small 4D will be done routinely to measure the thickness of the nuchal translucency to determine whether the baby’s development is normal and to rule out some congenital developmental problems. In addition, from this stage, the baby will start to grow rapidly, so pregnant women should also start to pay attention to their nutrition and rest, and go to prenatal checkups on time.