About a year and a half ago I was driving with my wife when all of a sudden I felt like I was about to black out and than I got this severe pain in my chest and heart. So I puled over and she called 911 and drove me to the hospital. The pain lasted for 10 to 15 min. When I got there they put me on all their machines. While there I had two episodes of SVT. Each lasting a minute or two. After all of their test they said I was fine and set me home with a referral to a cardiologist. Sense than I have been seen by two separate cardiologist, been to the emergency room 14 or 15 times, countless EKGs, and chest xrays, a CAT scan of my chest area, three family practice Dr.s, blood test up the wazoo, a holter monitor, stress test. You name and I probably did it.  Every doc and test says I am fine except i little high blood presser and a little elevated cholesterol level. So here is my question. Ever sense than I feel little sharp pains in my chest and in my arm or elbow  and sometime my jaw. My chest will feel tight at times. When I go to bed, every night and lay on my back my chest feels like a 20lb weight is on it, but not when I wake up in the mornings. I feel tightness and heavy breathing daily at different periods of the day. I have gained at least 35 lbs sense than "now weighing about 240". I am on high alert everyday and night about having a heart attack, because I feel like that day I had one. Could all those Dr.s be wrong or missed something that is rare or uncommon? Whats going on With me?