Right Throat Pain after Yelling

Almost one year ago, I was yelling at the top of my lungs when I felt a pop on the right side of my larnyx and immediately had pain shooting up to my chin and back to my ear from a spot next to adams apple. I have since been treated for GERD and have had an MRI, endoscope, XRay, and ultrasound of thyroid. All tests came back normal, but my pain still persists. I have been told it could be a strained strap muscle and strained voice box, but none of my doctors were certain. They thought the muscles would have healed by now. The pain gets worse when I talk or sing and also makes my voice crack. The pain worsens when I turn my head to the right or do neck stretches by rotating my head in a circle.

I am dumbfounded by this and would appreciate any feedback regarding the length of time involved in healing a strained voice box or neck strap muscle. Also, tell me if you have any other ideas on what this problem could be. Thank you!