Accidently announced

Were waiting to announce on Facebook until Monday (i have an ultrasound) and just gives us peace of mind. But I had wrote on a private group that I was going to purchase a blanket when I find out the sex. Well someone I know was in that group and just posted to my wall "omg did I just read on another group your pregnant!!??" I found it sort of rude because I specifically said in the blanket post Noone knows yet and it's a secret. I quickly deleted the post from the girl but now I feel my cute reveal picture is ruined :( just a bit of a rant a I guess. My preggo emotions are making me super sad now :( thanks for listening