I don't even know where to begin. I have pain that travels from the inner part of my left arm (mostly) and goes to my upper left side of my chest cavity. When I move, it is more tender. This comes and goes and has been happening now for about two years. Last year I saw a well renowned cardiologist and he ran an ultrasound of my heart. (I have a heart murmur - functional.) I also had a stress test and he says there is nothing (actually, he said absolutely nothing wrong with my heart). Why does this still occur though? It feels like muscular pain in my arm sometimes on my right side as well and feels "weird" with movement of my upper body almost like an "attack" of some sort. I don't want to hear anything bad, though. Who should I see?