What does it mean my mouth closes with like an "S" motion? my left side starts to opens first then the right. and it pops on my right side i can hear it in my ear slightly. also i noticed what is kind of wierd is when i'm walking downstaires or moving alot i notice like a clicking popping sounds within my ears/mouth, throat kind of wierd i know. I am also experienceing neck pain (front and back), shoulder pain, upperback, shooting pain in my back teeth and my jaws feel really tired after chewing. no real pain just tired feeling. could this be TMJ?