Hi

I personally think you should just be outright honest and say you have concerns you may be bipolar, then at least it's out in the open and can be discussed/looked at. I've always found that best but it depends how comfortable you are with that. Maybe you could write it down and if you're still shy/unsure about it post it to him/her. That's what my T told me coz I'm so shy.

Good luck to you.