I was wondering if anyone on Foliri and avastin ever had or have flank pain? Over the past three days I have had intermittant pain in my right low back and low right abdomin. The pain comes and goes and often is worsened when I change positions. I still feel very good. I am functioning at 100%. I find it hard to believe it could be worsening cancer but of course I am worried. I was wondering if anyone knew of any other reasons for this pain?