Found a small lump near the base of neck more towards the back of neck I'd say more in line with the back of your ear I feel fine although I do have a cold at the moment
Did have soreness around collarbone area a few months ago along with a stiff neck etc thought it was down to using 3 pillows at night
Have no been using 2 and pain or discomfort has eased not sure if it's a muscle problem but kind of worried just now about it
As I say I feel ok no pain etc plus the lump feels as though it moves