One thing I like about being pregnant is letting go of the notion of losing weight. If you are overweight to begin with, your doctor may actually put you on a reducing diet, but not to the extent of prescribing a type of dietpill. If you are normal in weight, make sure that you have a balanced diet - with proteins like meat, milk, eggs, beancurd, dried peas and beans; carbohydrates like rice, noodles, bread, potatoes and other complex startches; fiber, vitamins and fruits. Do no "eat for two" as that's an old wives' tale dooming you to a staggering weight gain during pregnancy. Lay low on fat, sugar and salt please.