I have had a odd shortness of breath that I noticed as early of Febuary, 2012. It seemed to have come on very suddenly, definitely not a gradual process, during this time it was also accompanied by symptoms that seemed to me to be similar to an anxiety disorder, and general lethargy. Although I feel as though these symptoms are absolutely REAL, I don't completely feel like a type of anxiety disorder is out of question, even though that isn't really consistent with my personality, I know anybody can be affected. I seeked medical help from my primary care physician, who ordered a Chest X-Ray, and some blood work. During the process of completing this workup, I was hospitalized for "Meckel's Diverticulum" (17 Y/O Male) I found myself in the ICU after excessive blood loss, and after and during my recovery I noticed my dyspnea had become nearly constant and more severe, and accompanied by PVCs, Palpitations, unexplained tachycardia, so instead of ending up with an appointment with a pulmonologist, I was referred to a cardiologist. After undergoing a myriad of tests, (Echo, stress test, chest CT, chest x-ray) my heart symptoms somewhat seemed to have subsided, and there weren't ever major problems found. Now, months later, the shortness of breath has not seemed to get any better, Obviously I have had better and worse days/weeks, but for the most part, my condition has seemed stagnate. I go jogging and walking, and surprisingly do moderately well, all things considered, but even sedentary activity can make me feel out of breath. Mainly I am wondering if anybody has had similar experience, useful information, or advice. It has been rather debilitating, and would appreciate anything anyone may have to say(: Thank You!