Conversation: The conversation between human and AI assistant.
[|Human|] Im a 39 yr female, who recently quit smoking and is still taking chantix. (The only side-efffect Ive noticed has been slight nausea-until now).My heartrate is normally low but today it has been 42-46 bpm. with shortness of breath and dizziness.  I dont have health ins, but at what point is it necessary to contact a doctor?
[|AI|]  Hi, Welcome to Chat Doctor, It's simple to understand that how smokers become difficult to breath and get feeling of dizziness. Our tracheobronchial tree consists of smooth muscle fibers, and any muscle get contracts or spasm with effect on smoke or cold. Now, if anyone who is already have their tracheobronchial muscles allergic to spasm and in addition when they get smoky or cold air, this smooth muscles begin to contract leading to constriction of tracheobronchial tree turned into unable to get air exchange and difficulty in breathing. Inhalers makes this muscles relaxed or dilatation in medical terms within seconds. Now, if your shortness of breath and dizziness is not troubling your day-to-day life then there is no need to see a doctor and sometimes it might get subsided by itself but in case if problem is persistent then you should see pulmonologist. Hope you will understand.