It's not exactly the same, but I just went through a pregnancy with type 1 diabetes. I ate a lot more soy than I usually do, but I was OK with that since it was temporary. I avoided rice (and rice noodles), fruit, and potatoes, except in pretty small quantities. I made sure to have a good protein source at each meal--beans, nuts, tofu, tempeh, soy milk, etc. I didn't avoid pasta since it has a low glycemic index and a good amount of protein (just mentioning this since pasta has a bad reputation), though I still made sure to keep serving sizes small and bulk up on protein and nonstarchy vegetables. I completely avoided fruit at breakfast and kept carbs especially low for that meal since first thing in the morning is when blood sugars are highest. I tried to eat five or six small meals rather than two or three big ones so I wasn't eating a huge amount of carbs at a time. And no beverages with carbs (except unsweetened soy milk). This includes no smoothies.
The ADA has some info on adapting a veg diet for diabetes: http://www.diabetes.org/food-and-fitnes ... ff-slabnav
Really the only difference is that the ADA considers a serving of grains/starchy vegetables to be 1/3 cup, and the regular food pyramid/plate counts 1/2 cup as a serving. Otherwise it's what you would expect. Lots of veggies, whole grains, beans, nuts.
Good luck with your pregnancy!