Type "smoking during pregnancy" into google and you'll get your answer.

If you can cut back to 2 cigarettes a day, why not quit?

No dont even think about smoking, besides terrible complications, two cigs a day can cause you to bleed during your pregnancy. And you'll be really really stressed then. Plus every puff you take decreases the babys oxygen supply. And since every pregnancy is different, you dont know how sensitive "your" baby is to tobacco, honestly it could really, really kill him or cause deformities, like extra toes and fingers. I heard a plastic surgeon say this is the number 1 reason he sees patients. It happens way more than you hear. You can do it!! We are all cheering you on. Go girl!!:))

You dont want the baby to get addicted before I got prego I was smoking a pack a day and now I have pretty much quit but every now and again I just get a craving and feel like im going to rip out all my hair and stab someone if I dont get to puff lol. But its not something I do every day or every week and when I do I feel horrible. You dont want your baby to get hooked on the stuff and everyday... That will get him/her hooked even if it is a lil.