overthinking?

Okay so I'm getting kind of annoyed and over thinking things(I hope) my boyfriend still isn't home. He said earlier he was going to dinner for his moms birthday I would of gone but I had to work. And that was about 4 hours ago he went... He still isn't home.. His family isn't super close that they'd stay and talk forever. Especially him. He's usually lets eat and leave. And I know that his niece and her boyfriend are going to be there and he doesn't get along with them especially her boyfriend at all. And they have a one year old, and a newborn. And his sister and BIL has a two year old and a 4 month old. So I'd think they probably already went home. And his brother has young kids as well that I'm sure they probably all headed home by now. I've texted him and he ignored me. I'm starting to get annoyed/wtf to why he isn't home by now knowing how they/he is. It's starting to make me think he went to the bars or something and he knows I get mad when he does (just for a lot of reasons) and plus were supposed to stop drinking for ttc. Idk what to do I don't want to go crazy over nothing, but it's really bothering me that he hasn't said anything to me and that he's not home by now.