We had planned to wait at least till week 12, but we just couldn't help ourselves.
We had his parents over for dinner and told them, then Skyped my parents (out of town) and told them with the whole gang together. There were a lot of surprised gasps and "I can't believe it"s, but mostly it was a happy moment. (We had a few doubts since we are unmarried and this was unplanned!)
After that we started calling close friends, and plan to send out some mass emails this weekend.
Did anyone else plan to wait but gave in?