Hi! Im underaged and I am aware of the fact that smoking is bad and I should stop, blah blah blah. I will stop smoking anyway. I started smoking a few days ago. Today I smoked 5 cigarrets after inly smoked 2x one per day. Now I feel a weird feeling in my chest , not my heart . Like a weird tight feeling, its not painful, just weird. How long does it take to develope cancer by smoking? Thanks in advance :)