I’ve had 9 months of three types of chemo and keytruda. Was sick 10 days after infusions than build back up for 10 and started all over. I requested to stop and was put just on keytruda and no more sickness being on that since last October. I do have a day or two of blow outs. Their is side affects but will not go back on chemo. As that’s not a way to live. My side affects are inflammation in joints which I’m know taking prednisone 10 mg. Which is keeping it controlled. Good luck and hope this helps.