The only reason to suspect anxiety is if you were experiencing irrational fearful thinking before your heart symptoms started. If you're not thinking anxious thoughts, you probably don't have an anxiety problem -- it's the thinking that triggers the physiological symptoms that go along with it. If you were having some difficulties emotionally or some stresses that were making you feel something before that heart feeling, then it's an anxiety problem. I don't know what your thinking is like or what it was like at the time, but you do. If it is anxiety, therapy is the place to go. But if it isn't, all the anxiety meds in the world won't help and they are not easy to take or stop taking, so you do want to make sure your problem is an emotional one and not something physiological the docs you've seen haven't picked up on yet. Nobody here can tell you which it is, only that anxiety is a thought process that when chronic leads to all sorts of symptoms, but it does start with a thought process.