@moinmo , you’ve had a difficult path over the past six years. Unfortunately these repetitive issues seem to pop up for many lung cancer patients. I’ll second Doug’s urging to reach out to your radiation oncologist, or even an emergency department if the difficulty seems to be worsening. Any change in your ability to breathe can be serious.
Hopefully your Medicare enrollment is processed soon.

Were the immediate side effects from the proton radiation more tolerable than your initial radiation treatments?