Shoulder Neck Pain. Or because of neck?

From last 2 years I am suffering from a dull pain or stretch kind of feeling that goes on from my left shoulder to left upper traps to left part of neck to left temple n back ear head area around tempora muscle and sometimes left cheek also. I can't even sleep on my left shoulder side with neck laying on my shoulder. I doubt that I have some problem in my left shoulder that is causing stretch from shoulder to left upper traps to SCM to tempora muscle? Also I feel weekness in left arm n hand due to this. Every night I apply ointment so I could sleep better. Did Cervical MRI 2 year ago NORMAL, USD of the effected area also normal, Brain MRI a year ago normal. Heart Scan n CT Coronary Normal. Neck movement okay. All blood reports normal. Weight - 72 kgs, Hgh-5 ft 8 inch, follow active lifestyle and do brisk walk daily. is it because of shoulder the whole area is impacted or because of neck? please let me know. Cervical MRI n USD attached herewith.