When I was at my worst I fantasized about violent scenerios in order to get myself to sleep. I won't say what these fantasies were except I was always the victor and the rest were slaughtered. These fantasies scared me because they were so vivid and they calmed me. Looking back now I realized how trapped I felt. There seemed like there was no escape from the emotional pain I was enduring. Nothing I could do. So it seems to me that those fantasies were the only escape I had.

Yes, I think it would be a good Idea to talk about this to your T. Sometimes under great stress fantasies can take on a life of their own so it would be better to start reducing the fantasies now before they get acted out on someone.
Zen