Methaemoglobinaemia is an uncommon but potentially serious disorder. Stress of pregnancy in a case of congenital methaemoglobinaemia leads to increased Methaemoglobin levels. This at best leads only to aggravation of maternal symptoms like dyspnoea and at worst results in obstetric complications compromising maternal and foetal safety. We present a case of recently diagnosed congenital Methaemoglobinaemia who underwent caesarean section with successful outcome.