Your center of gravity shifts because your uterus expands. Your abdominal muscles lose tone. Though back pain is largely unavoidable, your doctor can advise you about ways to minimize the discomfort. Wearing flat or low-heeled and well supported shoes reduces the stress on your spine. If your job requires sitting, you can reduce the stress on your lower back by putting one foot on a low stool.
Many doctors prescribe strengthening and flexibility exercises to reduce back pain.
Try the ones in figures 1 through 3 for starters. If exercise and preventive measures aren't effective, your doctor may advise other options such as icing or heating the area or wearing a support device. This information is not intended as a substitute for medical treatment. Before starting an exercise program, consult a physician. She is a member of the Women's Sports Medicine Committee of the American College of Sports Medicine and a team physician for the US Disabled Ski Team.