Exploring perinatal women’s experience of nonfatal suicidal behaviour (NFSB) could help illuminate the contexts in which perinatal suicide occurs and new ways to conceptualise maternal suicide prevention. Our aim was to explore perinatal women’s subjective experience of NFSB in South Africa. Data were collected via in-depth interviews with seven perinatal women hospitalised following NFSB. Thematic analysis showed how poverty and gender norms shape experiences of pregnancy and highlighted the need for eco-systemic interventions for perinatal women in resource scarce environments to increase social support, assist with childcare, improve educational retention, challenge gender norms and increase paternal involvement. Pregnancy can precipitate biographical disruption by disturbing women’s view of themselves and their futures. An inability to reconstruct a coherent narrative and re-imagine the future impedes the transition to motherhood and provides a context for suicide. Using the concept of biographical disruption to frame perinatal suicide, could identify novel approaches to suicide prevention.