How much weight should I gain during pregnancy

　　Pregnancy doesn't equal a get-out-of-jail-free card for a caloric spending spree. Weight gain during pregnancy is a lot like Goldilocks and the Three Bears: you don't want too much, you don't want too little -- you want "just right." If you gain too much weight, you're at risk for conditions like gestational diabetes; too little, and your baby may be born at a low birth weight. What's "just right" for you?
　　If you're at a normal weight before pregnancy, gain between 25 to 35 pounds during pregnancy.
　　If you are overweight before pregnancy, gain 15 to 25 pounds.
　　If you are underweight prior to pregnancy, gain 28 to 40 pounds.
　　For multiple births, consult your doctor (usually, you should gain about 35 to 45 pounds for twins).
　　The average woman should gain about 2 to 4 pounds during her first three months of pregnancy, and 1 pound a week for the remainder of her pregnancy.