Chiropractic Advice for Moms-to-Be As many new mothers can attest, the muscle strains of pregnancy are very real and can be more than​ just a nuisance. The average weight gain of 25 to 35 pounds, combined with the increased stress placed on the body by the baby, may result in severe discomfort. Studies have found that about half of all expectant mothers will develop low-back pain at some point during their pregnancies.1-3 This is especially true during late pregnancy, when th