<s>[INST] Hi, I have had chest pain in the left side for over 3 weeks now. The pain is mostly when I take a deep breath but today it seems to be happening when I bend down too. The pain has been strong at times & sometimes not even noticeable. It started  in my chest for a few days, then it moved to my back, then my chest & back. For the last 2 weeks it's been in the chest. It is a heavy feeling along with the pain. I am almost 34, have smoked since I was 14 but just quit a day after this all started. What should I do? [/INST] Hello dearWarm welcome to Healthcaremagic.comI have evaluated your query thoroughly .*  This seems in relation with different  possibilities as    -  lung infection or other pathology  -  chest wall  or  intercostal  muscle    ligament  sprain  or  strain  -  diaphragm related  -  others .*  Require  physician  consultation with x-ray chest for further      management .Hope this will help you for sure .Regards . </s>