I take a prenatal that's "just one" brand and it is vegan. I'm working on the protein question myself. I'm trying not to overdo soy. So far here's what I'm going:
adding peanut butter or almond butter on fruit
eating hummus (homemade and not so many spices and garlic)
making the hurry-up alfredo sauce from veganyumyum.com (white bean based) and eating it over steamed kale or other green veggies.
sprinkle hemp seeds over my cereal in the morning, and in my yogurt
grind up lots of hemp seeds in almond milk, then add cocoa, banana, peanut butter and ice
I'm switching to coconut milk yogurt instead of soy yogurt
eating beans and seitan rather than tofu
almond milk and hemp milk instead of soy milk
I'm more concerned about getting enough iron and calcium than protein at this point. I'm not very far along so I don't really have the experience to know if these are sensible choices. There are others here who can tell you (AND ME) if this is a sensible solution for getting enough protein. I know with all the nut butters, seeds, and coconut milk yogurt I could overdo it on fat, so I'm still working on finding the best combination of foods for me.