When a participant presents to UNMH L&D to deliver her baby, we will confirm her ongoing desire to participate in the study, and will review the expectations for participation. We will confirm that the subject continues to meet the inclusion and exclusion criteria. Following vaginal birth, all eligible participants will undergo postplacental IUD insertion using the standardized ring forceps technique under ultrasound guidance, within 10-30 minutes of vaginal delivery, per standard of care for this procedure.