Participation in this single-blind study will last through 6 months postpartum. Potential participants will first undergo initial screening, which will include a 90-minute interview with a psychiatrist and a mood assessment with an independent evaluator. Eligible participants will then be randomly assigned to receive 12 weeks of either IPT-P or PEP. Participants in both groups will attend 45-minute weekly sessions prior to delivery of their babies. At each visit, participants will complete questionnaires about mood, anxiety, mother-infant bonding, and daily function. Participants receiving IPT-P will learn ways to address emotional stressors associated with childbirth and will be regularly contacted by a therapist to discuss feelings and emotions. Participants receiving PEP will learn about the stages of pregnancy, childbirth, and early infant development.