Uggh. There could be one of 10 bajillion reasons why it was 5 points higher. The first, and most important, is that it’s not the exact same every single day.
It all depends on what you ate the night before, the rate of digestion, etc. You could go back next year and it could be 95. That doesn’t mean anything. They have a normal “range” for a reason. As long as your number is in that range, and it is, you should be fine. If it gets progressively worse, or is ever outside of that range- then worry.
It does lead to my actual question- what lifestyle choices are you currently making that would lead you to think you’re on your way to being diabetic? Basically what are you doing that would give you concern over a measly 5 “points”?