<s>[INST] I am a 27 year old male and I have been experiencing sharp chest pains and difficulty breathing for about 2 weeks now. I am a smoker, 510 and 197lbs. It feels like the pain is in two different spots, between my breasts and in my right armpit. Coughing feels like Im having a heart attack and most recently, I have seen changes in my stool color to a bright yellow. I have decreased the amount of cigarettes I smoke down to one a day since this started but have seen no improvement in the pain or labored breathing. Please help. Thank you. [/INST] Respected user, thanks for using Chat Doctor.come have evaluated your query thoroughly.* This is due to underlying bronchitis induced bronchospasm.* Treatment include many parameters - Clinical evaluation with x-ray chest, laboratory data and certain case need pulmonary function test .- Deep breathing exercises , regular walking in fresh air, YOGA help - Molecules as bronchodilators, decongestants are to be decided by clinician after thorough check up - Till then can take tab. Tylenol (500) mg morning and evening after meals.- Quit smoking totally (not one per day also)Hope this clears your query. Welcome for any further questions. Regards. </s>