I had a pacemaker inserted in 2008. I had the typical itching and twinges, but almost 3 years later, I am still having these problems. Recently I am having pains when I move my left arm, and there is swelling, burning, stinging and tenderness on the left side of the incision site and close to my underarm. Should I still be having problems, old and new, almost 3 years post-op?