I have symptoms of eye blurieness and tingling feet, exaustion, & low energy. People have told me I have diabeties. I have no insurance or money for a doctor. So concerned I got a blood sugar tester and tested at 420. Iwas told to stop pop, fried foods, and lower my sugar intake and carbs. So for a week now I have dieted, lost 7 lbs, and although fluxuating levels, My level tonight was 241. Am I doing right? Also, someone gave me some (Metformin) to lower levels. Is that ok to take?