Repost a I need more answers - I haven't been very good to my boyfriend recently?

My boyfriend is going through some major changes just now and usually I am very supportive of him and I always have his back but recenly when he has been talking to me about things I have not really been listening or backing him up and I dint know why. I love him to pieces and hope we are always together but it seems i am damaging our relationship to the point where he doesn't really want to talk to me about things now. What have I done and why? We usually see each other 3 to 4 nights a week but he is away on a course from today till Wednesday so I am going to use that time to think and I don't really want to contact him unless he contacts me as I think i have really pissed him off with my attitude. I just feel like crying as I cant understand why I have behaved this way and will tell him on Wednesday my apoligies and will start to go back to being my nice attentive friendly self with him. He is my best friend, soulmate and love of my life and I feel like I am being so destructive and ruining our usually amazing relationship with my recent behaviour. I never want to lose him and am terrified of it and wonder if that is the reason I am being this way because I am scared. I am 32 and he is 42. Advise please guys. I just want to cry but don't want to contact him yet as want to give him some space as I feel i have annoyed him so much he just does not want to talk to me.