If the chest pain
is accompanied by dry cough
, it may be an allergy
to smoke. in that case you have to get your blood count ( TLC ,DLC ) done.),& take nessesary treatment from your doctor.also try to get rid of smoaking.
If it's only pain ,It's likly to be muscle pain
&will be alright with pain killer like butaprixivon at bed time with a glass of milk.