When someone is super excited about a major life event, they're going to talk about it constantly. And when they encounter a friend that they haven't shared the news with yet, they're going to repeat it.
One half of that couple is an extrememly social person. She likes to talk, she likes to share. And really, they haven't really been all that public, trust me, there's plenty that's private. *winks*
It's particularly amusing to me because all of your characters talk about sex or allude to sex, talk about how much sex they're having, talk about how much sex they want to have, flirt with everyone they come across... But is that not super public?
Get over it. If you don't like it, you can leave, orrr maybe your characters can be a little more interesting so they actually have something to say.
Or are you just mad that your feeble attempts of your character announcing her pregnancy went mostly ignored, while people actually seem interested in what my characters share?