I'm 36 weeks and she's about 4lbs and in the 9% of growth development I go in every week to make sure she's moving and I get a growth appointment every 3weeks they told me not to worry because before beginning I was only 96lbs so it's not like my body's going to make a 10lb baby plus each baby grows at its own pace and weight so try not to stress yourself out about it bc that won't help