I think you know the answer. Of course you are reluctant to discuss this with someone new---you probably don't know if you can trust them yet. And, I would hope they would be professional enough to know that they are just getting to know you. At some point, do tell. It took me a long time to accept my diagnosis...it is hard to see yourself, like a fish looking at water. If you feel okay about it, maybe you could give them the ok to talk with your previous t. Good luck!!!