About 3 months ago, I had a bad (what was presumed to be) a panic attack. I had shortness of breath, chest pains, palpitations etc. For weeks until I got tested. All of my tests came back normal and after that they all went away.
Now, 3 months later they're back and the chest pain is really bad and its in my back too. Could my arteries have clogged causing this pain in those 3 months?