I have difficulty breathing, especially in windy conditions. In fact, I even have nose bleeds. I was having chest pain for the last month during extreme windy conditions, so my doctor ordered tests including an echo and strss test. There seemed tobe some abnormality so i was also given a heart catheter test, which was normal--no signs of blockage, etc. I am still having difficulty. What should I do? The only other variable in all of this is a lot of stess at work.