On week 17, our baby has grown to 5.1 inches (head to bum) and weighs 5.9 ounces! The baby is beginning to fill out and put some fat on, and the cartilage is turning to bone. Mommy is beginning to feel some faint flutters, but the definite kicks and punches have not been felt yet. This week is another big growth week, as the baby will grow another 1/2 inch and gain another ounce by week 18.
Baby is the size of an onion - 5.1 inches in length from head to bum.