Dating scan measuring a few days behind private scan?

[minnieot]

I don't know if I'm just being overly paranoid but I just had my NHS dating scan and they measured me at 13 weeks exactly, based off of my LMP I'd be 12 weeks 4 days but I'm just a bit anxious as at my private scan 8 days ago I was measuring 12 weeks and 1 days so I thought I'd be measuring 13 weeks and 2 days by now. I know I'm probably just being paranoid and everything looked fine but please can somebody just give me a bit of reassurance? Thank you!

Dates change by a matter of mm, it can easily be interpreted different depending on babies position etc. there's also the fact that not every baby grows at the same rate, so at your next scan baby could be measuring ahead of what you expect and 'caught up' if it was weeks different or barely any change from the private scan I'd be more concerned but a matter of two days off, I wouldn't worry about. I'm assuming you saw a nice healthy heartbeat?

Same thing happened with my private v nhs scan, it really is a matter on mm. Scan measurements were really unreliable for me towards the end as well, baby was measured 7 pounds 3 at exactly 39 weeks, I had him via c-section the next day at 39+1 and he weighed 8 pounds 3.

Thank you both so much ❤️ yes saw a nice healthy heartbeat and the sonographer told me not to worry about it but I'm such an anxious person I can't help it lol x

Totally normal, don't panic. At my 12 week scan I became a week more pregnant 😂 (was measuring 13, and absolutely certain of my dates as we had one 'accident').

Remember the chance of baby arriving on its actual due date is about 2.5%, so take it as a rough guide anyway x