A similar situation happened me but he was measuring bigger. She remeasured so many times and kept getting him 4 weeks bigger but she said it could just be how he was laying and said that I'd get checked again in 2 weeks. He was still bigger at the next appointment by 3 weeks so I got sent for a growth scan. He was actually even bigger on the scan again 😂 but you have plenty of time for baby to grow, they might not have had their growth spurt yet. Loads of people measure smaller/bigger and then have perfectly healthy weight baby's. xx