I was a 30-35 a day smoker. I just found out i am pg and i quit straight away, 11 days and counting. TBH, last time i didn't quit straight away (smoked up to 6wks) and i had a m/c. So totally not worth it, you want to give your bubs the best chance you can!
I know how hard the cravings are, which is y i didn't give up last pg, but after losing a baby i will never be that selfish again, and i am not missing it this time at all.
Good luck