What is blupping? Also, do you also have a dx of atrial or ventricular fibrillation? I am having pain as you are describing. Was in the hospital observed and tested for a heart attack, it was not. The pain comes and goes. Have been told it is costachondritis, but there really is no tenderness when they do the examination. I am frustrated and scared. I feel like I'm crazy. Stress is always questioed as the overall answer to unknown dx ya know? I have been under less stress this past year than ever before. What else have you done to find answers? Or have you gotten a dx ?