My mom tells other people my personal business?

whenever there is sometimes slightly out of the norm she calls everyone and tells them. she tells people how i thought i was pregnant, any little mess up, or something i said. half the time she over exaggerated and it's not even close to what actually happened. this is very annoying to me because i am a teen. i would tell her things more often if she wasn't such a blabber mouth. what should i do? am i wrong for feeling this way? it just feels like a backstabbing girl in a way.