It definitely makes sense that it's confusing! You may having some psychosis, but this may or may NOT be related to any flashbacks that you are experiencing. I don't blame you for being upset and leaving, but hopefully you will give T a chance to clarify things for you next time?
I always follow this general rule: if it's real to me, then it's real. I have to accept that it might not be real to someone else, but that's okay with me.