Neon the sonographer was caught off guard a bit. She said "there's one baby in there", and as I laughed and said "good" she said "oh no, there's two!" She was very apologetic about the mistake. Dh and I were just staring at the screen in disbelief. I then laughed hysterically while dh swore and went quite pale.
I honestly can't believe it. I did wonder if it could be possible as I've been so nauseous and sick, and I am massive already. Also because I had a weird late ovulation when we conceived, i did in passing early on think it would be possible I released two eggs as part of a messed up cycle... But I obviously was just idly musing and never for one second thought it could actually be twins.
Anyway, I will stop banging on about it - I'm just still in shock, I think. New EDD is 5th March, which probably means a Feb delivery, but I'm staying in this group! I will add myslef to the spreadsheet when next on the computer.
Thanks for all the congratulations 
Talking about GTTs upthread, I will be having one at 16 and 28 weeks but only because I had GD with DS. The fasting is not fun, but I remember last time it wasn't as bad as I thought it would be.
Good luck to those with scans tomorrow. I hope it all goes smoothly 