The xrays will let you know what's going on, but it's not going to fix the problem. You need to take care of the cause of your problem as well. Saying your moving out, your not going to be smoking and all that is just words. If you want to get better then you've got to actually do it.
1 stop smoking
2 stay away from second hand smoke as much as you can
3 don't go to bars and places where you are going to smoke
4 if you smoke when drinking then don't do it
5 start going for short walks, build up to longer ones
6 FOLLOW DRs INSTRUCTIONS
if you choose to not do what you should, then it's on you, no whinning, crying or complaining.