Thanks so much for the replies.

I can't begin to say how great it's been to have a forum to post on and get answers. I live in a place where it's an hour and a half away from hospitals, etc, and it's not easy to get into seeing doctors. Before last week, I hadn't even heard of an NT scan and I had no idea what time I was supposed to book it in. One post on here and I get all these answers and know what I'm doing when I rang up to make the appointment.

I should have done more research on it as well, but because I've had such a big threat the whole time of losing the baby, I havent thought ahead at all...it was too hurtful and scary to do so and too upsetting to read about the next trimester. So I had no idea about this scan.

Thanks so much for your answers. I have been told in last pregnancies that the scans were more accurate done earlier, but it didn't really matter to me then the EDD or the time because they never offered or had any of these scans last time (not that I was told about anyway) so the actual dates didn't matter too much. Only 5% of babies arrive on their EDD! Then this time i find I've got a week and half leverage to get the NT scan done and you can't do it too early or too late.

It's been very confusing but it's great to be able to ask questions on here. Thankyou so much again.