Gucci, I think it's normal to get the fear before the scan - I certainly did. Keep calm and eat cake, you are totally normal!
I only told parents and a couple of close friends early on, on the basis that I'd probably tell them even if it had all gone wrong, so as to have the support. Didn't tell anyone else until after the scan/blood tests came back all cheerful, and even then it took me a few days to work out how to bring up the subject!
Emmie, I've been loving the elasticated glories of maternity jeans for at least two weeks now. I'm not sure I can ever go back. 