RecruitingDrug trialFeasibility and Acceptability of HCV Treatment in PregnancyPregnant adults over the age of 18 who are seen in the Washington University obstetrics and gynecology, maternal fetal medicine or infectious diseases clinic or admitted to BJH with hepatitis C virus infection who have a history of past or current drug use Participant Duration: Approximately 1 year. Aims: Aim 1 - Evaluate adherence and treatment completion rates when glecaprevir-pibrentasvir is started during pregnancy for women who use drugs. Aim 2 - Evaluate patient experience with hepatitis C virus treatment during pregnancy.