I decided to quit smoking Mid-October of this year after smoking since I was 17 years old , I am 24 now. I was about a pack-a-day smoker.. The first month was easy, but then I started to get an itchy tickle feeling in my left lung. I also have occasional night sweats, lightheaded, nausea, anxiety, panic attacks, and just overall weakness/fatigue.. I had a chest x-ray done, which came back normal. I also had an EGD, EKG, Chest CT Scan, Complete Blood work and everything came back normal. There was one night a few weeks ago I smoked but the next day I felt horrible and felt like I started all over again with the withdrawl symptoms.. How long will all these terrible feelings last?? What can I do to subside these symptoms? and do you think they are all related to smoking?