a member

I think I might be trans (ftm) because at first I just thought I was bi, but I was never comfortable liking anyone or at least not as a girl. I have short hair because it makese feel like myself and I already get mistaken as a guy by most people and it makes me feel kinda happy when that happens yk? I also love wearing super tight sports bras so my chest looks flat, I never thought much of it until I saw this guy (he's a junior I'm a freshman) and at first I thought I liked him but the more I see him and think about it, I don't like him I just really wanna look like him. But at first I tried convincing myself I wanted to look like the girl version of him but the more I think about it I just wanna be a man. I'm also 14 so it could just be puberty and stuff but I just wanted to get some advice on what to do or how to figure out if Im actually trans or not