This document discusses mood disorders during pregnancy and the postpartum period. It covers depression during pregnancy, postpartum blues, postpartum depression, postpartum psychosis, and postpartum obsessive-compulsive disorder. Depression is common during pregnancy, with risks including preterm birth and poor health behaviors. Postpartum blues typically occur within the first 2 weeks after delivery and involve mood swings and crying. Postpartum depression has a later onset and can involve intrusive thoughts, while postpartum psychosis involves confusion and delusions. Risks, symptoms, and treatment options are discussed for each condition.