I don't use fb.
I'm very antisocial ... but I've warned all friends family etc noting of my pregnancy is to be shared on social networking sites.
I didn't announce my pregnancy to anyone until after 12weeks... told my parents and siblings... then his.
That happened to my cousin a few years ago. She waited this time around and is due in a few months!
I miscarried in 2008 after I had announced it early in the pregnancy. And it did suck having to explain it. Fast forward to this pregnancy. I waited to announce it till I was into my second trimester to announce it.