How likely will gestational diabetes turn into diabetes?

So I am currently 29 weeks pregnant and have gestational diabetes. I have been monitoring ever since and All my blood sugars except one are normal. However my mother has diabetes and my I just checked my A1C as well, it's 5.5 .I am normal weight and have gained only 16 pounds so far! I am walking a lot to ensure I don't get it! I am freaking out at the thought of getting it