Yes. During pregnancy, you and your growing baby need more of several nutrients. By eating the recommended number of daily servings from each of the five food groups, you should get most of the nutrients you need.
Be sure to include foods high in folate, such as orange juice, strawberries, spinach, broccoli, beans, and fortified breads and breakfast cereals. Or get it in a vitamin/mineral supplement.
To help prevent birth defects, you must get enough daily folate before as well as during pregnancy. Prenatal supplements contain folic acid (another form of folate). Look for a supplement that has at least 400 micrograms (0.4 milligrams) of folic acid.
Although most health care providers recommend taking a multi-vitamin/mineral "prenatal" supplement before becoming pregnant, during pregnancy, and while breastfeeding, always talk to your health care provider before taking any supplements.