Apparently too far on for Nuchal test, dates make no sense...help!

[EmilieFloge]

I had my '12' week scan this afternoon and I'm really confused now.

the baby was all there, looked ok, but it looked huge and the sonographer said I'm further along than I thought, and much further than I was formally - I thought I was 13+4, the midwife put me at 13+0 today, (from LMP) and the baby was too long for her to get an age on her chart from CRL, though I looked it up and it's actually 14+3 - which according to the other measurements is what the sonographer came up with too, though she said she was meant to go on Head circ alone, which puts me at about 15+3 !

I had an odd CB digital test at what I thought was 1+6 which said 2-3 weeks, so at the start I just dismissed that as having high HCG for some reason.

But if I am really over a week ahead, it literally means I conceived on day 4 of my period when I hadn't had sex for quite a few days, also i was charting and had a positive OPK on day 12 of that cycle.

It just does not add up. But pretty much all the measurements put me at over 14 weeks. I did think, it was the cycle before, but that would make the baby two weeks too small instead, which I think is more unlikely especially as I had a normal period.

So now I am thinking, what could cause a massive head in a baby, or a large baby all round? Medically I mean - they couldn't do the nuchal fold as it's too far on, so I've had the Quadruple blood test instead and I am a bit nervous that something is wrong as the baby is so enormous.

Sorry this is so long - MW phone is off and I've no idea who to ask, because nothing seems to add up.
Thankyou for any thoughts x

My dating scan moved me forward a week too. Whilst I wasn't temping or charting my cycles were a very regular 28 days so this would have me conceiving on day 7 too (and given my periods were usually 7 days long and I have never had sex until I'd stopped bleeding, almost impossible). I think its highly likely I just had a large baby at the 12 week point and I am fully expecting to be at least a week late giving birth!

Sorry I'm no help on the reasons for you.

The old sleigher gang are on a thread in TTC started by Pip called something about Easter bunnies. I drop in occasionally to wish them well.

Spring is on a thread i am on in pregnancy called pregnant with no 3 / 4/ 5!

Thankyou Limey! Will check in as I have noticed that thread, but thought it was something about multiples from the title!

Whatever, thankyou, yes, that sounds more likely. I think mine is enormous too, it wouldn't make any sense otherwise. I've been back over my March chart as well and there's no way.

I plan to go by the 20 week...if it's agreeing with the new dates, I'll accept them. If the baby is small by then, I'll go back to my own dates - and if the baby is even bIGGER then clearly it's just going to be huge!!!