I've never had an NT scan. I had early scans with the older 3 just to check on things coz I was really sick, but thats it til the morph scan.
This one I really did have no idea of dates, so had a scan at 8 weeks & I'll be having the morph scan & thats it.
I don't know many people who've had more than 2. & FWIW I've always found my gp has gone off LMP over scan dates anyway. My babies always measure ahead. Its only ever a few days though.