my heart in breaking

So, I told my parents and his mom and sister. I made each one promise to not say anything to anyone until I'm at least 6 or 7 wks. Well, my MIL wanted to tell her BF. So she did. My mom basically told our whole church. They asked her if I was and instead of saying ' I don't know' or 'ask her' or 'I haven't seen any proof yet'. she tells them that she never said anything. to me, if I was to ask someone a question and they gave me that answer then I would automatically assume the answer to be yes. Wouldn't you all?? So now my DH and I are not going to that church until mothers day, if we even go then. My mom hurt me really bad. I asked her to do one thing, Just ONE, and she blows it. It makes me wonder how many other secrets she's told of mine. So right now, I'm extremely peed off. I don't want to even talk to her right now. You are supposed to be able to tell your mom anything and know she will keep it a secret if you ask her too. You are NOT supposed to worry about whether or not she is telling everybody everything about you.

So does anyone have any advice?? Thanks
xoxo
Kandy