Just an update. Again I want to say thanks to everyone in this forum. It's so amazing to be able to talk about what I'm going through and get advice on it. Called my doctor this morning. He said since we have done bloodwork, an echocardiogram, chest xrays, stress tests, heart holter monitor, etc that my heart and lungs are healthy. I told him about the shortness of breath, left shoulder pain, left arm pain, etc. He then referred me to a orthopedic surgeon. He thinks that it's possible my pains are coming from something called my musculoskeletal. I have an appointment tomorrow to see what they say. I'm just grateful I have a doctor that listens and is recommending everything that could possibly be causing all these symptoms I'm having!