Yes, in most cases gestational diabetes will go away as soon as your baby and placenta are delivered. However you now have up to a 50% chance of developing type 2 diabetes within a decade from your pregnancy. The best way to avoid and delay the onset of type 2 diabetes is through regular activity, healthy diet and weight control.
If you are in Australia, and have Medicare cover you should register your details with the National Gestational Diabetes Register. This register is run by the National Diabetes Services Scheme (NDSS) and provided you keep your contact information updated with them, you will receive vital follow-up reminders on when to get tested again for GDM post-pregnancy. This is important for your long-term health and also if you are planning further pregnancies.