I recently came to the ER because I had what I thought was a crook in my neck. They gave me muscle relaxers and pain meds because the swelling in my shoulders were noticeable and he said since it s soft tissue no X-ray was needed. Well I went home and the muscle relaxers helped my shoulders but I now have a knot on my lower part on my head on the right side and it aches from time to time but hurts when I turn to the right. What could it be? Should I go back to the ER? I have been lightheaded and weak, just want to lay down and that s far from the schedule and lifestyle habit I keep. I m always on the go and full of energy.