In the case of a T - you really do not need to worry about this. They are professionals and deal with people every day. They have probably discussed the same issues you are worried to bring up, with countless other clients.
I'm only now reaching a point where I realise that these issues are very real to me. And if I want to get the most out of my therapy, I need to first be honest with myself. And a T is there in order for us to understand ourselves better - they need this information in order to help us.
I do hope that if you are currently with a T, you do not feel uncomfortable. Sure, it may take months before you feel comfortable to open up to your deepest issues, but you'll get there. Write these thoughts and feelings down for yourself. If you can, maybe e-mail these thoughts to your T, and ask to discuss it in the next session. Or bring your thoughts on a piece of paper for her to read before-hand.

Any professional T will deal with your issues as carefully and responsibly as they possibly can - it is there job; they are not there to judge.