Fallen Warrior,
I'm sorry for the pain and uncertainty you are feeling at this time.
It is awful to have to endure bullying.
Hormones could be a factor in your feelings. I would move ahead with your given gender, and embrace all the opportunities it holds.
It's awful that "gay" has become a descriptor for so many things.
I would focus on feeling masculine, and not give room to the other thoughts, which may have very well cropped up in light of the bullying you have endured.
Welcome to PC!
Hugs,
EJ