HI,I have recently had a malignant melenoma removed, sentinal biopsy is all clear, negative and wider incision negative, but about 6 weeks after I have had a kind of weird chest infection which wont seem to go away with very bad caugh although it has eased since, but I am also getting pain in my arm pits on and off especially when I stress out , could this be because of some lymphoma under the arms from the removal. Ken