Iam having light pain near right ear, jaw , back of skull and right collar bone. i suspect this happened because of bench press in gym.

Is it muscular?: It may be that you stressed the muscles a lot from weight lifting, but it could also be you overstressed some of the muscles by clenching too much. You may need a bite guard when you lift and i would recommend you check with your dentist or physician to be sure there are no serious problems. A physical therapist may be able to help as well if it is muscular.