In January I travelled in a bus.as I couldn't get a seat I was standing. All of a sudden the speeding bus stopped giving a jerk. Due to which I got pain in my arm. I thought with due time the pain will fade away. But itz June now, the pain has been drastically increasing. I am unable to move my hand backwards. The pain has spread unto my palm and shoulder. Sometimes while working the pain extends upto my chest. Whom shall I consult?