I was going to wait until after my first doctor's visit to tell friends and extended family, but now they want to do an ultrasound for dating next week. So, I'm a little hesitant to say anything until I've seen the heartbeat for myself.
But like a pp said, I will probably go ahead and tell my closest friends this week, because if anything did go wrong I would want their support. Besides, I am really starting to show, so it will be hard to hide it much longer. Let me tell you, I did not anticipate having a visible baby bump at 7 weeks!
My first pregnancy, DH and I agreed not to tell anyone but immediate family until 12 weeks. I miscarried at 10 weeks and then felt like I couldn't talk to anyone about it because no one knew I'd been pregnant in the first place.
All the same, I am still going to wait 'til 12 weeks if I can to tell folks at work. With so few employees in our group, having one of us out of commission throws a big wrench into a lot of plans and I'm not looking forward to that announcement.