I get those. All of those, even the pain in the elbows. But, like you, I've been to a doctor who has ruled out any cardiac issues. I believe on a surface level, but not down deep where it counts enough to make me feel better. I also have had conversations with a LOT of people with health anxiety, and we all have these same symptoms. It's incredibly unfair that physical manifestations of anxiety mimic heart symptoms so well, but they do. Given the battery of tests you've received from your doc (pretty much the same that I've received from mine), you're almost certainly not dealing with an unknown, underlying heart condition. The next step is teaching yourself to trust your doc when he says it's not your heart, which is far, far easier said than done. I'm still working on that myself.