Pickly, so sorry to hear your really sad news. I hope you're as okay as you can be after your loss. Be kind to yourself and when it gets rough, just put one foot in front of the other and remember to breathe.
Thanks everyone for the really kind good wishes (Seat and Eliza - thanks for being so lovely.)
I got my cvs results today after the longest, loneliest 48 hours in my life and I'm absolutely thrilled to say that the baby is perfectly healthy. No abnormalities at all were detected - and that's despite a 1 in 25 result for Downs from the NT, based on an underdeveloped nasal bone. I had my myself so totally convinced that there was a chromosomal issue, I sobbed and sobbed on the phone to the lady from the lab and made her repeat 'no abnormalities were found' back to me.
So if you have a bad feeling about your scan, please don't read too much into your 'intuition', because it's really just perfectly normal fear you're feeling. And a bad result on the NT scan is NOT a diagnosis. The older you are, the worse those figures are going to look - my 1 in 25 was purely based on my age (38) and the nasal bone. Everything else was fine but the computer is very intransigent.
Oh, and we also found out we're having a girl! 
Have a great day everyone