Got up one morning a week ago and my jaw was out of alignment , when I clinch my teeth I could not feel my lower jaw teeth line up with my upper jaw teeth, if that make sense. I tried opening my mouth as wide as I can in pain. while moving my jaws up and down I was hearing a cracking sound like my jaw was out of sucket, and the pain was in my ear. Today when I bite down I feel my teeth in alignment like its getting better, but when i clinch my teeth it sends a ringing sound to my ear. my head also hurts. I need to know what brought this on in the first place.