Marijuana slows the growth of cells, along with what everyone else said. Really it might not do a thing, but to me, it really shouldn't matter, why take the chance? Getting high is not as a high of priority as my baby's health.

And yes... Caffeine and cigarettes both are very dangerous to yourself and cause many deaths a year, not to mention your baby. I think cigarettes are the #2 killer next to drunk driving deaths but I might be wrong.

Hell, they could very well turn out fine if you smoked once a month, but it honestly isn't worth the risk, but if you are drinking high amounts of caffeine, smoking cigarettes or drinking alcohol, stop immediately, it is going to fuck the baby up bad.