American Pregnancy Association compiled a list of facts from some of the most authoritative medical studies and resources available on the topic of weight gain during pregnancy.

A healthy amount of weight gain during pregnancy is 25-35 lbs (11.3-15.9 kgs) for normal weight women.During the first trimester, total weight gain is only 1 to 4 pounds. After the first trimester, a gain of approximately 1 lb. per week is normal.
You and your health care provider need to decide what is best for you.Remember this is just an average.Eating a healthy, balanced diet will help your baby get the nutrients he or she needs