Hi Strummer....Hard Times. There are many good listeners here Strummer, we're a pretty good bunch.
If you have an oncologist he/she will be able to assist you in navigating your current medications. There are (as you most likely already know) many palliative drugs available to help you with pain and invasive symptoms associated with inoperable lung disease. My advice is to keep an open dialogue with your treating doctors...they will help you with making informed decisions that will keep you as comfortable as possible.
You may also like to post your question in the chronic illness forum
https://forums.psychcentral.com/gene...seases/..there
Be kind to yourself Strummer, and welcome to P.C