Dude, at your age I had a slight fear that I was gay, but I got over it. But later in life I found out I was right. Its not my choice, but I accept it, and thats the only choice I have in the matter.
I sure your parents will still love you if you do turn out to be gay, and if they don't, they are unfit parents and you don't diserve them.
Besides, like Ephi said, you're to young to know. Wait a few years and see how you feel.