Your baby's skeleton is changing from soft cartilage to bone, and the umbilical cord — her lifeline to the placenta — is growing stronger and thicker. Your baby weighs 5 ounces now (about as much as a turnip), and she's around 5 inches long from head to bottom. She can move her joints, and her sweat glands are starting to develop.Getting close to ultrasound time. We should know if you're a little brother or sister in a couple weeks! Sam is working on being a good "bee bruzher" to you.