Unsure...Please Help!

So, my boyfriend and I have been together for about 6 months. We were living with my grandparents for about a month and just got kicked out the week before Christmas. Anyways, that's beside the point I'm trying to get at. We've been staying around his family lately because we're moving to a different state the day after Christmas. My problem is that he just doesn't seem the same to me. He hasn't been as loving & he completely ignores me if one of his family members start talking about something different in the middle of my sentence. When I confront him about it, he acts like I'm imagining things. But last night, we had sex. And after we were done, he decided to play with a new laser he got. He used to cuddle me or at least talk to me. But I rolled on my side and ended up just falling asleep. Is it wrong if I'm upset?? What should I do??? Please help.