Welcome! No reason to be scared out of your mind...take a breath and realize you've been given a warning. Test, test, test is the answer and avoid those carbs and you'll be okay. Your weight sounds okay to me for your age. Almost model-esque in my mind. In any case, just eat carefully and watch your blood sugars.
Your BMI is within the normal range, by the way.
Your BMI is within the normal range, by the way.