@jennkrumz . I can relate to your journey. I was diagnosed with stage 4 adenocarcinoma a yr ago and have been on carboplatin, Keytruda and alimta initially then just Keytruda and alimta. I don’t have too much side effects other than 3-4 days of nausea, constipation and fatigue. By third week I feel normal, then the regime begins all over, like a roller coaster. I too had sinus pressure but Petscan and mri show no growth. Thank God. I had tumors in brain, lung, liver and bones initially but over half a yr with no activity and clear results. I have nsclc with high pdl1. I too was told I’ll be on this regimen forever or until remission. My regimen so far I consider a miracle along with prayers. The oncologist says I will probably have a longer life span than most with this treatment, guessing between 5-10 yrs. I’ll take it! Thanks for sharing your story. Wish you prayers and the best