Smoking cigarettes

Me and my husband both smoke.. I smoke more than he does.. Him 3 or 4 a day and me 5 to 7 a day.. Ive cut back a lot.. I used to smoke 1-2 packs a day.. Weve been ttc for 10 months now.. So ive been weening myself off of them.. How much could smoking affect me getting pregnant? Ill be 24 in a week.. And feel pregnant.. (Second pregnancy if pregnant)