There is a symptom of Fibromyalgia (FM) that is rarely talked aboutcostochondritis-syndroom-tietze...It is a chest pain that can be sharp and jabbing. It can easily be mistaken for heart problems including heart attack and stroke. Actually it is the cartilage between the ribs and the chest bone becoming inflamed and sore. You will probably find it hard to move your upper body without the sharp pain in your chest. It takes you off guard.