I feel pain in my left side of neck, like if a vein is swollen, left collar bone pain everyday, left ear, left jaw, left shoulder, left varicocele?

Get checked: Due to the nature of your complaints a thorough history and physical is recommended. This way your body parts can be examined and appropriate measures can be taken. Please see a doctor as soon as possible.

Neck pain: Perhaps you have an infection or another condition that requires a doctor to examine you. Please visit one soon.

Myalgia: Varicocele refers to your testicles. This sounds like a TMJ issue or muscular strain and spasm of the neck and shoulder musculature.