idk what to do

So me and my bf have been together for 5 months and lately he seems distant. I've been hurt a lot in the past so sometimes I read into things too much. The reason for him seeming distant is that he constantly works and can't text there and then when he can text he's sleeping because he's exhausted and his phone always dies. His car broke down so he hasn't been able to come see me but I'm going up there this weekend. He tells me he loves me and has just been busy and that once he gets in a better spot it'll change but idk what to believe I guess I'm scared of being hurt and it seems like he's drifting away but had says he tries I just don't know