[Roselle]

This may be totally unrelated but I too had breathing issues for over 2 months while on Chemo/herceptin/neulasta. But mine seemed to be triggered by muscle weakness in my legs. Would try to climb stairs and felt as if I had been riding bike uphill. By the time I would get to the top of my stairs or walk very far, I would be so out of breath and heart racing and my muscles were failing. They never figured out what was causing it but when I went from neulasta to neupengen, it greatly improved. Even though I am newer here, my heart goes out to you and all you are going thru at this time!