I have been getting more and more pain in the chest muscles, most in the pectoral (below the collar bones) although the collar bones hurt too and then radiates to my shoulders. Sometimes one side is mostly affected but both sides hurt. This then causes me to have the feeling of some shortness of breath sometimes because of the inflammatory feeling. Anyone else? I do have costochondritis and that affects my ribs and sternum. Is this part of the fibromyalgia syndrome? My doctors don't have a clue!!!! Thanks in advance for any posting.