I can honestly say I have told my therapist everything. I take the view that he cant help me if he doesn't know. I have also spoken to him about suicidal thoughts and thankfully it didn't panic him. It took a long time to get to the stage I'm at now though and I sometimes email him the really hard stuff. That way he knows it and I dont finish a session wishing I'd been able to tell him something.

Good luck and if it doesn't work maybe try someone new.