3 types of back pain that are common in pregnancy 1. Lumbar Pain located in the lower back and that usually radiates to the legs and back muscles. Among these the main one is the Lordose – excessive curving of the spinal column inward, which causes the butt to appear upright. It is caused by the extra weight gained that causes the woman to lean back to compensate for abdominal volume. This position can cause…"3 types of back pain that are common in pregnancy"