You sound just like me. I've done the same thing with my bf. But he always ends up calling... He lives an hour away so when he drives home and i dont hear from him in about an hour a start to think he's been in an accident, but its usually he stopped to see his brother or just hasn't turned his cell back on cuz he doesn't get reception where I live. The one night he never called me back he ended up leaving his phone at Rite Aid after he had been in the er for an infected tooth.
We went to bed mad two nights ago and he didn't text me back til 2;30 in the afternoon and i'd been trying to get ahold of him all morning. And he sya we're fine i just turned on my phone. He's very understanding and i'm getting over worrying that he is dead evrytime it takes a couple hours to hear from him.....
I guess it's kinda normal to freak about someone you care about. He's the best I have had in a relationship; and when i start to worry that somethings wrong i just have to think that everytime something happens aND HE hasn't called right away there has always been a good reason.
Just think positively about it and think about how much you trust him and wait....