http://www.medicalcannabis.com/pregnancy.htm
I think you may actually find this interesting.
And just to let you know, I don't smoke weed only to "get high". I happen to have a very serious anxiety problem and an eating disorder and do not have regular health insurance where I can go see a doctor and get prescribed medicine for it. And personally, I would prefer to smoke weed over drinking the poison that people call alcohol or smoking ciggarettes that have added chemicals in it that have been PROVEN to cause cancer.