How can I keep my pregnancy weight gain within a healthy range? Physical

Eat a healthy diet while you're pregnant and ask your doctor or midwife to help you set up an exercise program that's right for you. Eating for two doesn't mean eating twice as much as you usually do. In fact, you don't need any extra calories in your first trimester.
According to the IOM, you need only 340 extra calories a day in your second trimester, and 450 extra calories daily in your third trimester.

Dr. Szmuc explains how much weight a woman should gain during pregnancy.

The babies of women who gain more than the recommended amount of weight during pregnancy may be too large at birth, which can cause labor complications for both mom and baby. For example, studies show that women who gain too much during pregnancy are at a higher risk for having a cesarean delivery or a premature birth. They also tend to retain too much weight after pregnancy and have a higher weight in subsequent pregnancies.