The main problem is: labels.
People tend to label ANYTHING, including who you're going to bed, even (and maybe specially) if they're not the person you're taking under the sheets.
If I can give you a piece of an advice: do not label. If someone ever ask you what's your sexual orientation, just be true: I have sex with people who I want to have sex with. Of course, there's the whole set of: YOUR GENDER + GENDER YOU USUALLY FEEL SEXUALLY ATRACTED = SEXUAL ORIENTATION, and that pattern works a lot for acceptance, understanding, getting rights and stuff. But if it is not working for you, just don't wear this label.
One thing that occurs to me is: as male, I don't feel sexually atracted to females, but as a woman, I do. That would kind of make me a transgender bissexual woman. Wow, that's long. And that would be a prision to me. I don't feel the need to be defined by that (even though it may be true), so I just say: hey, I like people who I like, and that's all for today.
Don't let others expectations on you transform you.