Many women experience a shrinking appetite in the third trimester, mainly because there's just not much room left in the belly. But healthy eating is essential right now—the final months of pregnancy are dedicated to intensive fetal growth. In fact, most babies gain half their weight during this period. One way to get the nutrients you need without stuffing your already-full belly is by eating small meals and snacks throughout the day.
Remember: If your weight is in the “normal” range (a body mass index of 18 to 25) before you conceive, The American College of Obstetricians and Gynecologists (ACOG) recommends gaining 25 to 35 pounds throughout pregnancy. After putting on an initial three to five pounds during the first trimester, you should be gaining one to two pounds each week. As long as you’re on track to gain a healthy amount of weight, there's not much reason to worry—but if you're concerned about your weight gain, check with your doctor.