Someone giving away your big news...

Annastasia
Okay, so I'm a little over 6 weeks pregnant with my first and my boyfriend and I had just found out about a week ago. We have kept the news very quite since we are still adjusting ourselves and have only told a few people that are close to us. Well tonight my boyfriend and I were in Walmart and we seen a friend of ours that we haven't talked with in a few months and he told my boyfriend that he heard that he was going to be having a baby. Totally a shocker because we have been keeping the news so quiet..
Well apparently my boyfriends brothers girlfriend was telling everyone at work about the news of our baby.. I would have understood if it was a happy slip and someone accidentally told someone because they were excited but we don't even talk with this girl. So I'm extremely upset because we live in a small community and I haven't even had the chance to tell some people.. I'm just posting to vent and see if anyone has had any similar situations happen. 
Thanks in advance