I had a heart cath in August. 1 stent was installed. I still have the same symptoms, shortness of breath, and tightness across my upper chest sometimes branching to my left arm, nut not all the time. Since then I have had a stress test and an echo but both showed normal. My question to my cardioligist was " Is there any other medical problems that would cause these symptoms?" He sidestepped my question. Am I getting old and paranoid I am 74, have had 3 bypasses, hypertension. A Fib, and diabetes. Any ideas