RecruitingClinical trialSubstance Use in Pregnant People - Optimizing Retention in TreatmentSubstance use during pregnancy is a leading cause of maternal morbidity and mortality in the United States, with 55-80% of postpartum patients disengaging from substance use disorder (SUD) treatment within one year of delivery. Structural and social determinants of health, including housing instability, transportation barriers, and limited childcare access, further exacerbate disparities in treatment retention. This pilot study, conducted in two specialized prenatal care clinics, evaluates the feasibility and acceptability of two integrated strategies to promote sustained engagement in recovery-oriented services during the perinatal and postpartum periods. Aim 1 implements a standardized social needs screening and referral protocol to connect patients with community-based supports. Aim 2 pilots a contingency management intervention to incentivize recovery-supportive behaviors. Findings will inform the design of a larger multi-site randomized controlled trial to evaluate the impact of these interventions on treatment retention, overdose prevention, and maternal-infant health outcomes.