I ate 50/50 raw during the end of my pregnancy. I felt MUCH better than the first 5-6 months of my pregnancy.
I started out gorging myself on horrible things when I became pregnant. I had cravings for anything cheesy. I would go out and order the worst possible choices. Cheese sticks or jalapeno poppers were included with almost every meal I ate, and ranch sauce to top it all off. I felt miserable and gained 80 pounds over my pregnancy. I went from 95 to 175. It was BAD!!
During the last few months of my pregnancy, I decided I needed to STOP. I cut the dairy back out of my diet and started eating a lot more raw foods. I felt more energized and lost a little bit of the weight. (Not even close to as much as I wanted to lose, but I didn't feel it safe to diet while pregnant.) I'd definately suggest eating mostly raw while pregnant if you have the will power.
Right now I'm eating about 80% raw. I still eat cooked dinners and eat out on occasion. I've been trying to stick with eating at Ruby Tuesdays and other places that offer salad bars when we go out to eat.