Dried beans and lentils
All women need 10 extra grams of protein a day during pregnancy (for a total of at least 60 grams); beans and lentils are an excellent source, with about 15 grams per cup. They're also high in fiber, which helps to combat constipation. And 1 cup of cooked lentils meets half of your daily folate requirement. "Add them to rice dishes and salads," suggests Lola O'Rourke, R.D., spokesperson for the American Dietetic Association.