I was having chest pains years back, went to the Dr. She immediately sent me to Emergency. They did a stress test. (Which almost killed me)LOL
When I got done, the Dr. doing the test said there was nothing wrong. I was holding my chest saying I still hurt. "Well you will have to check in with your family physician." A hour later I was at the Chiropractor telling her the story. She got me on the table and used that impact tool they use. I had a rib out of place. 2 min. later it was fixed! Don't hesitate to think out of the box when medical can't find the problem.