Hey Bex,
You're right to stay on topic.

This may help you out.
Intuitively what I feel is 1) You overdid it with smoking all those cigarettes. With anything one always has to build up a tolerance.
2) But since you're still having reactions, I feel your body is overloaded, meaning there is a weakness that needs to be addressed. I feel it's not the cigarettes that did it, but more so a weakened constituiton.

(Interestingly enough I'm going thru the same thing. Smoking has made my body aware of slight pains in my kidney, which now I need to address.)

There's a number of things you can do.
1) The best is find a good chinese doctor. They can very quickly find any weakness in your system, and then prescribe herbs that fix the problem permanently.

2) You can do muscles testing, which uses the body to tell you whats wrong. (Systematic yes and no questions.) Google muscle testing for more info.

I'd say a chinese doctor is best, cause the muscle testing takes a while and then you have to research the best herbs to use.

Or you could use western doctors, but since the takeover by Pharmaceudicals they're completely useless, unless you have an emergency and need ER.

The diagnostics of Chinese medicine is much more thorough and organically better.

I hope this helps.
MMH.