Telling people

Shelby
This is our first child and it's hard keeping it quiet!! We've told pretty much everyone we've seen in person... But I've been told to wait to share the news with EVERYONE (social media, etc) since I am only 4 weeks.
I've been told that it's recommended to wait til 8 weeks to be sure everything is fine with the baby.
My question... When do you ladies tell that you're expecting? Do you wait til it's safe? Or do you share you're great news even if it's still early?