So pissed at my best friend

Br
I am so pissed off at my best friend for revealing on Facebook that I'm pregnant and even revealing  what my baby name will be once I find out the sex. I made a status about me not feeling well and   My family and friends started asking if I was pregnant and she confirmed and told them my baby name. I'm only 7 weeks and 4 days and made plans to announce it to them later on in a more decent way and she took that away from me I am so pissed!! I understand she's happy for me but it just wasn't her place !! Am I overreacting?  She said she was just playing 😢