Bump on my eyeball?

Posted: 24 Jan 2015 11:58 PM PST

For a while now, I've noticed a bump on the whites of my eyeball. I can't necessarily see it, as it's too far back, but I can feel it through my eyelid. I'm 15, and my mom says it could be the result of a sty I had a week ago. It was a bit sore then, but now it doesn't hurt. Any help? Thanks!