Gestational diabetes mellitus (GDM) requires effective management during pregnancy and careful postpartum follow-up. Initially managed through dietary adjustments and exercise, some cases may require insulin therapy to maintain blood glucose levels within normal ranges. Postpartum, women diagnosed with GDM should undergo glucose testing at 6-12 weeks after delivery to screen for persistent diabetes. Lifestyle modifications, including regular physical activity and healthy eating, remain essential to prevent the development of type 2 diabetes in the future. Monitoring and support from healthcare providers are critical to ensure optimal maternal health and reduce the risk of complications in subsequent pregnancies.