Annette,
As someone with lung cancer who had half a lung removed two years ago, and who still has some numbness in one area of my rib cage, I can offer the following information. When I spoke to my surgeon about the numbness many months after the surgery, he stated that sometimes the nerves in this area are damaged during surgery, and that there may be pain or numbness afterward. Furthermore, he said, that pain or numbness may eventually disappear, or it may remain permanently. Apparently, it's not predictable ahead of time. Although some of us may have had an experience similar to yours, I would still suggest that you check with your own surgeon or family physician to confirm that your pain and numbness are normal, and whether there is some safe and effective way to alleviate the pain.
Good Luck!
Alvin

not my surgeon since I seen him for my six weeks checkup and he said it was normal. I do not like him so don't really put much weight in his theory. I go see my oncologist again in two months and I will see what he says.