Hi, I was knocked of my bicycle about 4 weeks ago. I damaged my knee and immediately had a dull pain across my chest at just below shoulder height. At the hospital they x-rayed my knee but only physically examined my chest, saying I had soft tissue damage. 4 weeks later everything has healed apart from the chest pain which is now only on the left of the sternum, above the heart. A sharp pain is evident when moving at certain angles and when coughing, and a dull pain when pressing the area. I am male, 44 years old, had Acromegaly (now cured) and am taking hydrocortisone, Nutropin, Nebido and calcium+vitamin D. I am worried I may have damaged a vein or artery. Thanks for your help.