You don't specifically have to eat differently per se. but you can fine tune and change your habits to an extent. After all you are going to be feeding two mouths at the same time. Remember that your baby will develop a taste for different foods when he or she in inside the stomach.
Fluids: Fluids are very important during your pregnancy time and you must make sure that you drink plenty of water and juices. Keeping your hydrated is very essential.
Vegetables and fruits: Pay special emphasis to fruits and vegetables during your pregnancy. You want to stay as healthy as possible during this period.