While his tumors have shrunk, he is extremely weak and can barely walk a few feet before he can't catch his breath. His oncologist said it was not the disease or treatment causing this. He sees his pulmonologist on Dec 30. Has his chemo and avastin this week. He just does not feel well. List a lot of weight nearly 60 lbs. and eats very little. He fell and was in the hospital overnight for observation as he is on blood thinners for a fib he has a pacemaker. I don't understand why he is not feeling better as the chemo is working. Any thoughts or suggestions?