Your baby's head is now the size of a marble and his hands like little peas. His muscles are becoming stronger as he treads water in his amniotic fluid. Occasionally he may get hiccups from swallowing the amniotic fluid which may fill his tiny stomach. This means he is not only swallowing but practicing breathing and even sucking. This swallowing and moving of his upper lips is in practice for feeding when he is born.
You will perhaps by now gained on average 2 to 4.5 pounds although the fetus is still only 11 inches and less than 100 grams. The extra comes from the increased size of your womb and the amniotic fluid.
If you have had previous pregnancies there is a small chance that you will recognize and feel movement but in most cases it takes a few weeks longer before you will notice this.
Which pregnancy week am I?
Use the pregnancy calculator to show the most important dates of your pregnancy.