Chest pain in right side for the last 4 or 5 months I've been getting chest pain in my right side. Today was the worst. It got alittle scary.

Multiple things. Could be a problem with skin, nerves, muscle, shoulder, lung, heart, or stomach. See your doctor for a more thorough history, physical exam and further evaluation. If you sleep on your stomach you could have a neck strain that radiates pain to the chest or arm. Get checked out just to make sure.