Groves AK, et al. - Among adolescent (aged < 18 years), young adult (aged 18–24 years), and adult women (> 24 years), researchers described sexual relationships in pregnancy and HIV risk behavior in the first 14 weeks postpartum. In order to describe differences across adolescent (n = 29), young adult (n = 263), and adult women (n = 207), bivariate and multivariate statistical tests were used. Findings suggested that adolescent mothers can benefit from interventions that promote empowerment and healthy relationship skills development. Young adult women could benefit from interventions to delay early postpartum involvement in unprotected sex and prevent exposure to intimate partner violence. All women, regardless of age group, can benefit from interventions that increase access to preexposure prophylaxis during the perinatal period and access to HIV testing by a partner.