Welcome to the board!!!
I am no expert but it appears that you may have tmj. The symptoms taht you mentioned are felt throughout this board. I also suffer from a locked jaw. Talk about no fun!
If I were you I would go see your general dentist so he can properly diagnose you and refer you to a tmj specialist.
Do you hear any clicking or popping in your jaw/joints/ears? Do you grind or clench your teeth? Do you wake up and feel like you have been through the wringer from the shoulders and up?