Is it possible that you might have arthritis in you neck and shoulders? leaning on them would only cause more pain when you sat up. It happens to me but I do have that greek fellow in my shoulders from surgerys and over work.

Since posting this. UPMC, Pittsburgh, Oct 2011 until Jan. I averaged about 2 to 3 surgeries a week there. w Can't have jaw made as bone is deteroriating steaily that is left in jaw. Mersa is to blame. Feeding tube . Had trach for 4mos. Got it out April.
--- Passed away 5/14/14, will be greatly missed by everyone here