My suggestion is that you stop guessing and get to the doctors. It could be something
entirely different. A good internist can probably advise you what is needed. The
earlier you catch and treat something, the better your chances for recovery. Please,
take care of yourself. If you don't have coverage, go to a clinic or ER when it's
its very possible it is. I too am a smoker and was diagnosed with year. At first thought it was anxiety but after experiencing dizziness also with the breathless and not be able to breath i knew it was someone else.