During pregnancy, low back pain and pelvic pain are very common due to physiological changes in the body. Hormonal changes cause ligaments and joints to weaken while at least half of weight gain occurs in the abdominal area, putting strain on the back. Some ways to get relief from back pain include stretching the lower back regularly, sleeping on the side with pillows for support, using a warm compress, maintaining good posture, wearing a maternity support belt, using a lumbar pillow, getting enough sleep, practicing yoga, and seeing a doctor if pain is severe or does not improve after delivery.