Fell Down, Bruised Arm And Shoulder. Having Ear Pressure, Jaw And Glands Under The Jaw Hurt While Chewing
Considering that your symptoms didnt subside after 6 weeks this can be something significant, but this isnt usual indication for MRI.
In some cases such injuries can cause intensive muscle contusion and swelling which then can press nerves and veins in neck and jaw area.This should completely pull back after 6-8 weeks. If there was injury of TM joint its dislocation or fracture should be ruled out by simple xray exam.
MRI and further tests should be done if you notice some serious signs such as tingling in neck and arms,loss of sensation, inability to move head in all directions, vision and hearing difficulties or unexplained dizziness.
If you dont have these I suggest to take antiinflammatory painkillers and wait for 2 more weeks.
WIsh you good health. If you have any question I ll be glad to help.