sorry I have to vent for a second, my SO just started back working and I'm happy for him but lately…

sorry I have to vent for a second, my SO just started back working and I'm happy for him but lately he doesn't come home until 4/5 hrs after he's been off and barely answers the phone and when he does its with an attitude. we haven't spoke in like 2 days idk why && yes we are under the same roof . I'm really to the point where I'm just tired of always being the one to try to fix or talk things out even when I don't even know why things are going on . iv never had a problem out of him with cheating and due to certain circumstances I don't think I will unless someone like me is very acceptive of major life changes. I'm really at a point right now I'm ready to give it all away the worrying the stress I would rather go through being a single parent yet again ...