Weird dreams about deceased father?

My dad passed away Dec 21, 2010 at the age of 50. I was only 20 when he unexpectedly died. Now I have weird dreams a few times a month about him and they are all the same. I dream that he passed away and I see him in his casket. Then a few weeks later he is alive and well and I want to tell him the pain I went through seeing him lifeless in a casket but I get too choked up about it to talk to him about my pain. So in my dream I just go along as if eveything is normal but im in a lot of pain even though he is alive again. I've had several dreams exactly like this.