Your baby is about 45–46.2 cm long (from head to heel), roughly the size of a honeydew melon, and weighs between 2.5 to 2.7 kg, with some babies reaching 3.5 kg. While they may not grow much longer, they’ll continue gaining weight.
Your baby is accumulating fat to help maintain body warmth after birth. The brain continues growing and now weighs about two-thirds of its full-term weight.
Internally, the kidneys are fully functional, and the liver is now processing waste. If it’s a boy, his testicles may have fully descended, visible via ultrasound.