Hi Martin, Rob is right, 10.5 is a fairly high HBA1C, but you need to bear in mind that your diabetic support team will also be in the dark as they don't have the earlier HBA1C to compare against. They won't know any more than you do whether your BSs are going up or down.
You really do need to insist that you speak to your GP about this. Your diabetic nurse is not qualified to make either a medical diagnosis or to prescribe. The GP may well want to just keep you on the metformin for a few more weeks so that there is a benchmark to measure against. Although 10.5 is high, it is not life-threateningly so and a few weeks more shouldn't harm you but, with no disrespect to nurses intended, that is not a decision that a nurse should make.
You seem to be in the dark, so I suspect you are not doing your own glucose tests with a glucose meter. You need to start doing this as soon as possible because that will firstly tell you which direction your medication is taking you, without needing to wait for an 'official' verdict from the GP, but it will also guide you as to which foods you eat have the biggest influence on your sugar levels. You may not get a tester on the NHS but you can get one from pretty much any chemists. They are not particularly expensive - around £10 to £15 for the tester, plus extra for the test strips the tester uses. The test strips are usually available on prescription even if the test meters are not.
