Fortunately for me my cancer metastasized into my cervical lymphatic system and there was little to no activity in the lung itself. And like you, I had no clue there was anything like cancer going on. My path did not involve any surgery; it was strictly immunotherapy with Keytruda and little side effects from treatment. I can also tell you that many members of my charity team for the Chicago Marathon are cancer survivors and patients and the progress we have made in treatment is amazing. Don't be surprised if your oncology team recommends regular exercise along the way. Maybe not to the point you're used to but staying active is key to successful treatment. Let us know how things are going!