If it’s type 2 diabetes, which it could be, my advice would be to change your diet, lose weight and do not take the pills. My son and his mother (my ex) are both type 1 on insulin, and my grandfather, father, uncle and brother are/were all type 2. I was diagnosed last October and the nurse at the clinic said I would have to take metformin, and would probably have to go onto insulin. Then she checked my blood pressure which was high (it has always been on the low side of normal). I pointed out that she had just told me I would have to lose my license if on insulin - not surprising my my blood pressure went up!
I refused to take the metformin, and changed my diet drastically. I have lost nearly 2 stones and my blood sugar is normal. Cut out carbohydrates and sugars and one of the worst I found, (this is going to hurt!) beer. The majority of type 2 diabetics do not need medication, just a change in lifestyle and diet, but the clinics automatically put everyone on pills as this keeps their quotas up to date.
Best of luck Conor - hope it’s nothing serious in the end.