Michele, the best way to find out is to actually have sex with a man and then see how you feel. Reality and fantasy are not the same and bringing a fantasy to reality is the best way to find out who you're really attracted to ... and it could well be that you are most aroused at the thought of yourself as a woman, which I suppose is its own sexual orientation.
Can you see yourself in a romantic relationship with a guy? What about with a girl?
