My left cheek hurts a lot! i can't open my mouth all the way. it hurts when i eat something. i've been getting headaches. i don't know what's wrong. it hurts way too much. how can i make it go away?
You might have a problem with your temporomandibular joint (the joint that allows your jaw to open and close), which is called TMJ disorder. Here's a link to some information on TMJ disorder that you could read to see if it sounds like what you are experiencing: TMJ Disorder
It would be best to see a dentist or doctor who has some experience in treating TMJ to get some help in easing the pain.