Am I wrong?

Hey guys,

I recently found out I’m pregnant with my rainbow baby and I ended up telling my mom and my grandma. But I told them I didn’t want my brother to find out yet because I wanted to wait until my first trimester was over just in case anything happens since I recently had a miscarriage in December. So I was sitting with my family discussing a problem when my grandma said out loud “yea let the pregnant women say something” referring to me. Am I wrong for feeling mad at her? I really didn’t want him to know yet and I’m mad because she told him without my permission. I just feel kinda stupid for it but I’m still really upset about it. Advice?