since 12,000BC, there has never been one documented case of Cannabis death, ever...
there are many studies NOT funded by the government's reefer madness machine...
have you used the search feature here yet?
if you do find it is okay to consume small amounts of Cannabis during pregnancy, i would HIGHly suggest you do it in vapor form, to eliminate the risk of introducing tars and carcinogens to the baby...
as far as i know, Cannabis only kills dead cells that can become cancerous, and i do not think there are dead cells in a brand new baby developing...
but i am no doctor and you really need to do your homework on this one to be 420% positive...
the problem with that is you will not always know who funded what studies that you are reading...
yet one more reason why we do what we do, spreading the truth and discrediting the misinformation...
i wish you luck in your mission and congratulate you on your new forming addition...

love and respect.