I had triple by-pass surgery back in February, 2008, and had another angiogram back on September 8, 2008, as I am having alot of chest tightening and breathing problems. The chest tightening and breathing problems will get worse if I do activities and even with just no activity at all. In the last few weeks, even just sitting or lying down in bed will bring on chest tightening and breathing problems. I also have pain just below the rib cage on both sides of the ribs and I notice it is worse on the right side. Just recently, I noticed if I bend down, I get a sharp pain on the right side below my rib cage. I am really worried as the angiogram I had on Sept. 8/08, showed my heart was in good shape---no blockages and the by-passes are fine. I also had other tests on the heart such as echo cardiogram, stress test, prefusion study, etc. and they all showed I was fine. In 2006, I did have an angioplasty on my left groin area due to blockage but this was cleared up with angioplasty. I have lost over 20 pounds in the last six months even though I am eating normally and even eating more than I used to. Back in July, 2008, I started experiencing alot of dizziness and lightheadedness when walking so my doctor has arranged for me to see a ear, nose and throat specialist as he thinks I also have an inner ear problem or problem with my equilibrium. Recently, an ultrasound on my thyroid showed there is a nodule there and my doctor has ordered further tests to see about this nodule and why I am losing weight for no reason. Could a thyroid problem be causing the chest tightening and breathing problems and pain? Since I have such a strong history of blockages and family history of heart disease and artery disease, could I possibly have a blockage in another organ in my body close to the chest or even in my chest. What could be causing these symptoms? Could cancer be a cause?