S/O help

so i found out i was pregnant with my rainbow baby.... But my SO doesnt knw how to tell his baby mama... i told him he has til the 10 week mark but now i have to watch whT i sayon social media because someone could go tell her.... this is hard keeping this a secrete.... anyway rant over... oh he hasnt told his family either but mine knows cuz im horrible with things like this... ok now rant over iknw most people keep it a secrete for awhile to make sure we r out of the woods but im overly excited about this ya know.