Maybe it's not quite diabetes yet?

On my visit to the doctor's office yesterday, the practitioner said I had diabetes, and prescribed Metformin. But I am not sure I agree that I am diabetic yet. For one, while my initial fasting blood test showed a 127 mg/dL result, subsequent blood sugar readings in the last few days (both fasting and postprandial) were elevated, but fell within the parameters listed below:

A fasting blood glucose level between 100mg/dL (milligrams per deciliter) and 125 mg/dL is the accepted range for a diagnosis of prediabetes. The normal fasting blood glucose level is 100mg/dL and the cutoff for diagnosis of diabetes is 126mg/dL or above. A reading of 100mg/dL can be thought of as 0.1 g of sugar for every tenth of a liter of blood.

The OGGT additionally requires a blood glucose test two hours after drinking a sugary drink, which a health care professional can provide. The two-hour blood glucose range for someone with prediabetes is between 140mg/dL and 199mg/dL.

Twice my fasting sugar has been 121, and the two-hour reading after eating was 189. Both of these seem to be more indicative of pre-diabetes than diabetes.

Where am I going with this? While I am fully aware that I have a health problem, I do not think it is full-fledged diabetes yet. It is important for me to make that distinction, especially since I am going to try to get this under control through a change in eating habits and an increase in exercise. I do not want to rely on medications. I was prescribed Metformin, but I do not want to take it because of the potential side effects. I do not want to run the risk of getting hypoglycemia.