I am a 23 year old female. I smoked around 8 year and quit about 8 months ago. A motn after that I have had this constant 24 7 no breaks tightening in my upper chest area. I have had he following test done. Endoscopy, chest ct scan with constrast, pft, stress test, ekg, echo, chest x ray, colonoscopy and many more probably. I thought it was due to smoking but doctors are telling my it's anxiety. Has anybody experienced this all the time? I know tightness of the chest is normal during panic attacks but is it normal to have had it for 8 months for 24 hours a day 7 days a week? I'm starting not to be able to cope with this. I feel as if I am going to die every single day.