During pregnancy, the average woman gains 25-35 pounds, which is healthy; however this places increased stress on the body as specific hormones dramatically change and affect the ligaments. These biomechanical shifts and  changes in posture will cause aches and pains. Medication is not encouraged because many medications cross the placental barrier affecting your unborn child. Chiropractic is a safe, drug free way to help you cope with the aches and pains of pregnancy. The adjustments are very gentle and effective, especially during this period. Here is some great basic information for  expecting mothers.