My right shoulder really hurts. It's definitely not a muscle ache, nothing can be massaged to make it feel less tense or knotted up. I'm not sure what is causing it either, it may have to do with my sleeping on my right hand side. I recently purchased pillows that provide much more neck support that any other pillows I have had. Perhaps the inner working of my neck and shoulder are not quite used to the new pillow arrangement. I would have thought more support would have made my neck and shoulders happier. Hrm.