I have a pain that starts like behind the ear (but feels kind of like an ear ache), down my neck (left side only), and along my collar bone. I also had a cold since January, and still have slight congestion. Have had CT scan for congestion, which showed nothing. Also, not sure if important, been having many headaches and leg cramps. I ve been to ENT and he found nothing, but took no Xrays or tests.