Shaving head for cancer?

I'm a fourteen year old girl. Everybody in my family who has died has died of cancer including my mom. Anyways, my mom started balding from the chemo, and she hated it. She got a wig however and was fine with it. I've been thinking about this for a while, and I don't care about my hair and I barely wear it down, so why not give it to somebody who would use it? I know this sounds really shallow, but do you think that I would get bullied or something if I shaved it for cancer? It's already long enough and I wanna shave my head like tomorrow or soon.