Ull be fine hun.
very similar to ur 20wk scan. Kinda lay there while they shout out all these words and numbers that dnt make sense for a while!
they will reassure u as they go along and let u have a look at screen once all is checked over.
Ive had 2 growth scans and hes been measuring 3wks ahead in both, estimated weight at 36wks was 7lb 5!! so god knows what he weighs now!
Dnt worry or panic, im sure baby is fine hun. Bump measurements can be so wrong compared to the measurements on the scans, and they are not always accurate either! xxxx