@richcolleen- Welcome to Mayo Connect. I'm glad that you found us and there are many to talk with on the Lung Cancer Group. I have stage 4a multifocal adenocarcinoma of the lungs for the past 10 years and 10 years before that had a fast growing adenocarcinoma. I am a mentor for Mayo Connect's lung cancer group. I have not had immunotherapy but have had regular, nasty chemo.
There are many people here who are taking Keytruda. I hope that they will chime in and answer any questions that you might have about this drug, including, @liz8716, @bentrivercarla
What kind of cancer do you have and have you had any other treatments? You must have been devastated to hear that you had lung cancer. I know that I was. But we march on, don't we? Are you feeling better during your "off" time?