Hard to believe the ER docs don't seem to be taking your symptoms more seriously. You say you're getting referrals……..are you following up on them? I would imagine you've been told to see a cardiologist and I think you should see one as soon as possible if you're having chest pains and shortness of breath. If your heart checks out OK, I'm betting he/she will refer you to a pulmonologist. Unfortunately we often have to be our own advocates when dealing with the medical world. Please don't put this off. I wish you the very best.