I have had very similar symptoms with rib pain and fluctuation in lung nodule increase/decrease. I had a bunch going on at that time. Collapsed lung that would not heal,and a pleurodesis treatment that went wrong. The pain in my ribs was something I never felt before. My doctors couldn't figure out why I was in so much pain. My pulmonologist finally put me on colchicine and it worked. I was only on it a short while. There are a ton of natural anti-inflammatorys you could try also.