The investigators long term goal is to determine pelvic pain mechanisms that will inform clinically-relevant classification and evidence-based treatment of women with IC/PBS and CPP. The short term goal of this application is to determine the safety, tolerability and efficacy of acupuncture in women with IC/PBS as a neuromodulative treatment and to correlate the urinary microbiome with acupuncture responders. Our approach will advance the understanding of the contribution and consequences of peripheral pelvic nociception in IC/PBS.