Hey, I was at the doctor for pain in my back, centered right insides of the shoulder blade. Its muscular they say, and gave me pain-killers. 2 days ago. but the pain-killers has very little effect, and the pain is intense! and this morning i felt the pain also flows out to my right arm. I allmost cant move my head or my right arm, and its very difficult to get out of bed by my self. paralgin forte is what they gave me, and arthrotec. Arthrotec I stopped using though, since I had a reaction in my stomach. Should I be concerned, considered that the pain has not become any better, but maybe even a little worse?