I honestly don't know much about this. If it is gestational diabetes, then it will clear up after the baby is born. If you are concerned that you may have actual diabetes that was not diagnosed, I think you need to have that conversation with your Dr. But don't worry too much about gestational diabetes. As Kricket said, many women get this and if you follow your diet or take your insulin as instructed, all typically turns out just fine.
Many people get the pregestastional diabetes when pregnant. It will go away after the baby born. If you google you will find all the info you n eed. Good LUck!!