Met a dude but I'm PREGGO

I met this guy today and I'm chatting with him...but I'm 14 weeks pregnant and me and baby daddy are done but when do I tell this dude I'm carrying a human in my belly lol.... I have a lil bump I wonder did he notice 
UPDATE- met that me guy Friday the day I posted this haven't spoken to him since. I had only texted with the guy that day a few hours...had we continued to talk I would have brought up baby but why waste my time given him info and look where it went "No where"