Believe it or not I told tons of people when I found out at 3 weeks. My workplace is pretty tight-knit and once I tell one person, it spreads easily. Plus they all knew I was trying. Told family immediately and we're waiting til the 20 week ultrasound to find out the gender before we announce on Facebook. Next time around I probably won't tell so soon, but I was WAY too excited and just had a good feeling about it, and I promised myself I would enjoy this time and not be superstitious. The other thing is, my work friends would have known if something went wrong because I'd have to take off from work, so I figured I'd rather tell them the good news than the bad if it came to that!