A pregnant woman needs, on average, approximately 10 cups (2.3 liters) of fluid per day.
This includes the recommended three to four glasses of milk or calcium-fortified soy beverage.
Fluid requirements can also be met with a glass or two of fruit or vegetable juice, herbal tea, soup, rice drink or any other non-alcoholic refreshment.
Coffee and regular tea also count, in spite of their diuretic qualities, but should be consumed sparingly because of the caffeine.
Drinking water—either bottled or tap water—is a great way to rehydrate during or between meals. In addition, your body will derive water from food, especially fruit, vegetables and semi-liquid foods like yogurt.