Sometimes but not always. Most women who have it, it goes away. BUT most women end up with diabetes later in life. I had gestational diabetes with two pgs and I am now diabetic. Once you have gestational diabetes they will treat you like you always have it. Once you have that label good luck with insurance.
As long as you eat right and take care of yourself. I know someone who it took 6 years to go away, but it did eventually. She didn't have healthy eating habits and didn't exercise at all so that's why it took so long.