Am I in the wrong?

My bf and I are expecting a baby. We do not live together. I have told him that I would be going over there tonight for us to spend time together. We only see each other twice a month. He has told me that he cannot tonight because he is going to be gaming and that he has certain days that he games. I have told him that next time,  I will comply to hi schuedle. But he does not want to sacrifice one day, even though I am agreeing to his schuedle from this point on. Am I honestly in the wrong? Or can he not be understanding especially in the situation I am in?