I have had various medical problems since being diagnosed. Currently I am on 1000 mgs of Metformin each day, but have a HBAc1 of 6.1. Dr will not let me test any more. However whenever I am ill, recently was in hospital with infected wound in my left thumb, stabbed by a rogue twig whilst retrieving a golf ball; dangerous game golf; anyways got infection and ended up in Hospital due to part of twig remaining in my thumb, BS went haywire. I was tested every 4 hours as part of observations post general anaesthetic, to remove foriegn body from my thumb, and saw 4 hourly test results go from usual 4.0 to 14+. HBAc1 also went to 7 at next test. Now back to 6.0. So any medical problems/infection does send BS haywire.