Is it wrong not to go?

My boyfriend plays sports. So naturally he has games. I haven’t been able to go in what feels like 4 months. Stuff keeps getting the way. Last week I couldn’t go because I worked late. So tonight he asks me if I’m going to go. I say probably not. He seems disappointed. I’m just tired. I was up at 6AM, got off work at 8PM, and now I’m just overall tired. I want to go to hangout with him but I don’t want to go because I’m EXHAUSTED. Is it wrong when he obviously wants me to go and I haven’t in so long?