Cannabis during pregnancy?

I have severe anxiety and a very stressful job which I have countered using oils tinctures and smoking joints rather than take big pharma drugs and pills which have never had good effects on my body and my doctors came to this as a “cure” however now I am pregnant. I’ve had many friends who have smoked during pregnancy who claim it was the only thing that allowed them an appetite most times and took away morning sickness and their children are supposedly super smart and calm babies as well but I’m skeptical.... thoughts?