I just visited Corporette.com and they’ve recently written a post about when you should announce your pregnancy at work.
The comments are great and I’d recommend you take a read to get a good understanding of all the ins and outs that other women have faced when deciding when to share their news.
Personally, I still side with the “earlier the better” camp because I just like to have the air clear. But I completely understand if anyone else lands in a different spot.
P.S. While you’re at Corporette.com check out this great post on wearing button down shirts. If you are a mom who is bursting at the seams, you’ll definitely appreciate their advice!