Increasingly bad headaches please someone help!!!!?

I have been having in creasingly bad headaches for about 3 years now. I have found when they"they're bad it means my eye prescription has changed. However one problem my eye prescription is now changing evry 2 weeks! (don't say that can't be true cuz I've had it tested) is that really bad? These headaches are nasty and make me feel like scratching my eyes out because they burn an hurt so much! How can I be normal? What could this be? Anyone got any ideas please it's effecting my social life, my schooling and it makes me really I'll someone anyone HELP PLEASE