Muscle Infection Arm Burning Pain Right Arm And Under Right Shoulder Blade?

Burning pain right arm and under right shoulder blade? - muscle infection arm

I have a burning pain in the right middle and lower chest to my right shoulder blade for several days. I also noticed that my right arm seems to lurch in the way of the shoulder to the elbow, and sometimes have my hand. I went to the emergency room and found no broken bones or infections. His burning benign, but sometimes a sharp stabbing pain. Should I just pull or strain a muscle, or even worse, as a tear?