From wiki "Psychosis is an abnormal condition of the mind that results in difficulties determining what is real and what is not. Symptoms may include false beliefs (delusions) "
Your belief that your body is wrong or that you are female in any way, shape, or form is the delusion. Period. That, in a nutshell, is why GD is just a type of psychosis, and should be treated as such. = I think we had this discussion in your thread a while ago.
I don't think you are a bad person or anything. I'm mostly sad that whatever shrink you went to did wrong by you in specific, and his field in general by not giving you proper treatment.
As far as what anti-psychotic drugs would be appropriate? I have no clue. There are a lot, and most have some pretty nasty side effects. That's why you should be trying therapy first.