A Cochrane Database systematic review has concluded that current evidence supports acupuncture as a treatment for pelvic and back pain in pregnancy. The authors included 26 randomised trials examining 4093 pregnant women in their review. Moderate-quality evidence suggested that both acupuncture and exercise tailored to the stage of pregnancy can significantly reduce evening pelvic pain and lumbo-pelvic pain compared to usual care alone. In addition acupuncture was found to be significantly more effective than exercise for reducing evening pelvic pain, and was also more effective than physiotherapy at relieving evening lumbo-pelvic pain and disability and improving pain and function, although the effects were small.

Interventions for preventing and treating pelvic and back pain in pregnancy. Cochrane Database Syst Rev. 2013 Aug 1;8:CD001139.