I smoked until I was about 7 weeks pg with DD then quit until she was about 2, took it up and quit a few times over the following years. Got pg and quit then had a m/c and was so angry at my body i started smoking again! Quit when I was 10 weeks pg with DD2 and haven't smoked since although I still miss the "me time" and the relaxation of going outside with a coffee and a ciggy.