Over the nine months of your pregnancy, you are likely to experience some physical and emotional bumps in the road. Most women are not caught off guard by feelings of fatigue and the discomforts of morning sickness during the early weeks. These sensations usually improve. The middle months pass as you make plans and preparations for your child’s arrival.

As you begin your third trimester, your doctor will schedule a few tests to make sure your body is adapting well to the changes that pregnancy brings. Your 28-week appointment will include a screening test of your blood sugar…