I will keep it simple: My oncologist changed my pain control, so I slept for 15 hours. It's the first time ever, and I feel weird. My friend called me when I woke up and told me something someone did to him that made me really angry. I don't usually get mad like that to that degree. Is it the sleep, the pain, or the change in the med? I will go back to the other medication if it is that. I have calmed down now, but that is too much sleep.