Same, I've heard of these scans being inaccurate as well x
Find out how big the baby is, and nudge that down a bit, and if it's still big, then perhaps it's worth doing something about.
The scans can be 20% inaccurate either side. But the way I see it, we have to go off the information we’ve got!
They told me my first baby was considered “big” at scans, and she did end up being 9lbs 6oz at birth. Still within normal range though. Although I have heard sooo many stories of these scans being incorrect by quite a bit, so take it with a pinch of salt! x