I have diabetes. I found out 5 years ago. I had prediabetes and it is NO JOKE. I had the same numbers. At the time I was in my 20's. I did not get diabetes until I was 59. I may have had it before.
Stick to the diet. It is a good diet for everybody, exercise and test your blood sugar. Get a monitor. That way you will know when to ask the doc to test for diabetes. If he/she wants to test yearly at the lab ask for it.
That way it will be caught early and you will live a long life.
Love Ruth