Poor you, I hope people will be very sensitive, especially the pregnant women.
I totally relate to you, Croydongirl; I returned to work after my miscarriage (which happened the day before my 12 week scan but I hadn't started to show) and although I had only told a couple of close colleagues/friends I actually asked my boss to explain to my department the reason why I had been absent. She explained that I didn't necessarily expect them to say anything, just to understand that I was going through something ghastly. The thought of having to pretend I'd been off sick with some bug or other while I felt (and still feel) bereft was just too much and I needed people to know that. Most said nothing but there was a lot of unspoken support and I truly felt that not having to pretend made things easier for me in my work environment.
I think there is a lot of pressure on women to keep quiet until a supposed 'safe' period has passed but I now feel quite strongly that this is to protect others from embarrassment. While I would not want to cause embarrassment, I also don't feel that we should not have to paint on a smile and pretend everything's marvellous. You wouldn't expect someone to do that if they had lost their husband/parent/sibling and it should no more be expected of someone who's lost their baby.
Hope all went well Niamh22 x