In this pilot prospective longitudinal observational study, women who are pregnant and who will be experiencing childbirth for the first time will be recruited at the third trimester and observed longitudinally for psychiatric and pain characteristics until 3 months postpartum. The primary outcome is postpartum depression, assessed by Edinburgh Postnatal Depression Scale (EPDS). Infants will also be observed for infant development characteristics over time. Women who choose to receive labor epidural analgesia will be observed, as well as women who choose to avoid labor epidural analgesia. At baseline, women will complete baseline surveys as well as a baseline pain sensitivity test (quantitative sensory testing, QST). During labor, they will complete an electronic pain diary delivered by a bedside mobile device. Three postpartum assessments will occur over 3 months to assess maternal depression, other psychosocial variables, and infant development.