I was involved in a rear in collision on monday. I started having pain across my collarbone in to my shoulder. I was seen at the ER where xrays were done and nothing was found. I can t lift my arm above my head because of the pain,mostly in my shoulder now and there is a constant burning sensation and a dull achy pain. I have been taking anti inflammatory meds given to me at the ER.I have a lot of swelling and my shoulder set lower then my other shoulder and is very tender to the touch. I don t know if I should be seen by another doctor or if I am just sore from the accident. What could the injury be and is it ok to wait a few more days to see if it improves or should I make a doctor s appointment?