Is this weird???

I've been smoking since I was 13, I'm 50 now. I am doing pretty good with my quit, Actually darn good! I am very proud of myself but I know I would not have made it this far with out the help of all your posts! My QUESTION is..... Today is the first day that I have really been coughing alot and having the tightness in my chest. I have not smoked in 3 weeks! Is that wierd? Or is it because I smoked for so long (2 packs a day) that it is taking longer for things that I am reading should happen much quicker???Thanks for any

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