Sit comfortably on the floor or on an exercise mat. Lift your right arm over your head with your palm facing your left side. Gently stretch to the left from the waist. Remember to stop as soon as you feel a stretch on your right side. While you may gain flexibility as you practice, you should also be careful not to over stretch, which is easier to do in pregnancy. Hold your stretch for 15-30 seconds and repeat 2-3 times on each side.
This stretch is particularly good for easing round ligament pain.