Facebook? how to tell certain ppl the news?

I haven't been on Facebook since December lol my Facebook friends and family are used to me deactivating my account and coming back from time to time, anyway I finally came back and I'm not one to post my business on Facebook like any pregnancy announcement or anything like that because the people that's supposed to know already know, either way I do have a few family members and family friends I don't have contact with if it isn't on Facebook and I know they would be excited to know that I'm having a baby, how do I send them the registry or inform them that I'm pregnant without it seeming so random? Or is it really just random and I shouldn't share the news with them at all lol? I don't want to make a post because half of my Facebook friends are just ppl I went to high school with that I don't necessarily speak to.