Week 31...

Your baby’s crown-to-rump measurement is now about 11 inches (280mm) - almost as tall as a 12-inch ruler. Its weight is at least 2 3⁄4 pounds (1,300 g), the weight of a quart-and-a-half of water.

The baby’s growth in height and weight will begin to slow between now and birth. Even so, your baby will gain about two pounds (896 g) this month.

 

If your baby is born now, it may have a callous on its thumb from sucking it in the womb.

For about the last month, your baby has assumed the fetal position in your uterus. The legs have been drawn in to the chest, because there isn’t room for them to straighten out.

The baby’s brain is still developing rapidly, increasing the number of interconnections between individual nerve cells and identifying groups of cells that will perform complicated functions throughout your baby’s lifetime.