A1C 6.7, blood sugar 149. I had already changed my diet and started an exercise program. But the dr. Put me on Metformin. 5 weeks later. Kidneys hurt, neuropathy, never had that before.blood sugar fasting runs 170 to 220, being over 200 alot. I stopped taking it...Dr ticked...Kidneys don't hurt. Neuropathy seems to be lessening....oh gosh I hope. Why did this happen to me?