If you are pregnant your diet must be balanced and nutritious. Because what you eat or drink during pregnancy is your baby's main source of nourishment. You should ensure that your diet contains enough nutrients for the baby to develop and grow properly. To get the nutrients you must eat a variety of foods including fruits and vegetables bread and grains protein sources and dairy products. It is also important to drink plenty of fluids when you are pregnant to meet your body’s increasing fluid needs. During pregnancy your blood volume increases and your body’s water compartments also grow substantially.