Hiya, hon. Welcome to the site. *hugs*
First of all, you're not bothering anyone. It's good that you got this out and asked for advice about what to do. That's what we're here for. So don't worry, okay?
After reading your post, I'm going to go out on a limb and make a suggestion. By the sounds of it, you've been alone with all these thoughts and feelings, and never confided them in someone else. The suggestion I'm going to make is this: If this specialist is as good as you say, would it be possible to make an appointment to go see them just to talk over your feelings and maybe get their insight on some of the things you think and feel about yourself? Rather than going there with the intention to get confirmation, and that someone else agrees with your identity and who you are... just maybe go to talk, to explain the way you feel, with no preconceptions.
I think that might be a good first step to take. No one else has to know about it, and you're not committing yourself to anything at this stage. But reaching out to someone impartial, and not tied up in your personal circumstances may give you a sense of perspective, and what the best step is to take. Before you decide to do something that can't be undone, you know? Perhaps that conversation will present the answers to you.