Did you go to an endocrinologist? Have they tested your fasting glucose?
I believe the strips and meters at walmart (walmart brand) are more affordable if you are paying out of pocket.
I would be asking ALOT of questions to your providers about going on metformin. ALOT!! Right now the data seems to be showing that people should start metformin earlier than they do and they should start insulin earlier than they do. Once the damage has been done to your vascular system it can't be undone. My a1c is 5.3 which is pretty normal but with my family history and gest diabetes I have even discussed metformin with my provider. Metformin is pretty darn benign and long-tested.
What were your instructions for glucose testing? Are you testing 1 hour or 2 hours post meal?
Do you have weight to lose?
I am not trying to overwhelm you but you need IMO to address this as thoroughly as possible. Lose any weight you need to lose. Add in exercise or EVEN BETTER just walk or ideally climb stairs for 10-15 minutes right after each meal (I don't manage this 3x per day but I do it after my bigger and relatively more carb heavy lunch and dinner meals, breakfast I keep very routinized and extremely low carb). Go to an endocrinologist who demands "tight control" and is oriented toward preventative and proactive treatment.
ds 2007
dd 2010
baby dd 2014