My jaw has been hurting really bad...?!

you could have TMJ search it for more info. I have it and complained about ear pain and i went to my ear dr and he said its TMJ. Common symptoms include locking and cracking of the jaw and it can be caused by clenching or grinding your teeth. theres not much treatment for it but i find going to a chirropractor works :) It may not be TMJ because i dont no what symptoms your having but good luck with finding out whats wrong and hope you get the treatment you need so you can feel better x.x.x
AFTER READING YOUR ADDITONAL COMMENT I DO BELEIVE YOU HAVE TMJ! :( its not fun and nothing can really be done my chiropractor just massages my jaw and teaches me how to relax it and ive seen some improvement you should look into it further :)