I'm not sure how much I can contribute at this point but I have been diabetic(type II) for nine years and on metformin for seven. I took insulin during my pregnancy. I am a fifth generation diabetic. My family was getting diabetes when they were hardworking farmers and fishermen. The endocrinologist feels that my diabetes is purely genetic and not lifestyle. I have worked hard for good control and saw it slipping away from me even though I hadn't changed anything. When I talked it over with the endo she said that it simply may be the disease progressing despite my best efforts. Not what I wanted to hear. I would second having your insulin levels checked because you simply may be unable to produce enough anymore. Unfortunately that is the progression of the disease. I saw it happen with my mom and my grandparents and they all ended up on insulin. I also saw it when I was pregnant with my son. I was eating so little that I was losing weight and my blood sugars just kept rising. Feeding more carbs to a diabetic is generally insanity. One other thought is that illness and infection can do nasty things to your blood sugar so I would also ask the doc to rule that out as well. I had an abcessed tooth pulled(I was a single parent working restaurant and couldn't afford a root canal) and my blood sugar went to record highs for me and stayed there for 24 hours. Good luck, I understand your struggle far too well.