Hi, I have had left shoulder pain for a lot of years now. But now it is getting worse. My concern now is that over the last 4 months I am wheezing and getting out of breath, especially when I walk up a incline. I feel ok in my self . In 2016 I had a operation for stage 3 bowel cancer, which resulted in me having a stoma. But I'm now getting worried that the symptoms I have might be lung cancer.