trying to sort thru more unbiased sources, i came up with this

Marijuana and Pregnancy on MedicineNet.com

so, it seems a 9 month break aint gonna hurt! or maybe thats just me, i take risks, but not the ones that may possibly mess with some1 else's life!

if i were u, i would rather stay safe than sorry, would take a long break! (i have not smoked in 1.5 years and doin just fine, switched from "heavy use on daily basis" maybe only the first 10 days or so u will have some withdrawal symptoms)

or i would heavily and scientifically research it. i think u can use your local library and their online subscriptions to real scientific journals (not media links or newspapers) to find more accurate info and perhaps more updated stuff on this issue.

but who am i to give advice...
this is your personal matter, involving your child though, but still remains your choice not any1 else's. thus, its your responsibility to make the most educated choice, so u wont regret it later on.

EDIT: oh i forgot to mention, im not sure, but smoking weed while pregnant if caught by authorities may result in child abuse charges! i donno, just guessing!