Hi all! FTM here (28 weeks today) and I’m wondering when they start to measure how “on track” your baby is growing. My SIL is due two weeks after me and they told her that she’s measuring two weeks ahead. My doctor had never said anything about measurements or anything 🤷🏼‍♀️ I had a sono at 20 weeks and wont have another (aside from a 3D sono for fun) until 36 weeks. Thanks!!