question: around the left side of my collarbone, there is a puffiness with some discomfort..it does bother me with some slight chest discomfort as well..My Doctor said it was the top of my lung being pushed up...due to constipation, bloat, etc...she did not listen to my lungs or heart, and the reasons for it to be pushed up did not apply...I get short of breath and lightheaded...I'm confused