Gestational Diabetes - High Fasting Level

Has anyone been diagnosed with gestational diabetes? This is my 3rd kid but 1st time so I’m confused. I meet with the nutritionist next week but in the meantime, my fasting levels have me confused. All of my other numbers are where they should be (so far) but my fasting level (which they said should be under 90) is almost consistently around 113. Anyone have any advice on how to work on that? I feel like I already eat relatively healthy and even if I have an off night with something quick and unhealthy it’s still the same. Last night I had a late night protein snack to try to help improve it (suggestion from a friend) and had apples and peanut butter and it only went down to 107.