And eating at least seven servings of fruits and vegetables daily will help ensure that expectant mothers and babies will get enough vitamin A and C -- which will help with skin, eyesight, bones and teeth.

Even though a healthy diet can be achieved through all these foods alone, doctors do recommend expectant mothers take prenatal vitamins while pregnant. This ensures they will get all the important nutrients they and their babies need each day.

Some women may experience constipation while pregnant, especially if they are sensitive to iron in their vitamins. To help fight constipation, pregnant women should make sure they consume at least 20-30 grams of fiber each day. The best sources are fruits and vegetables, whole grains, and potatoes. And be sure to drink plenty of water.