Hi,
Most NHS staff will churn out the "eat carbs with every meal, your carbs should be 50% of your plate, eat low fat" It is out of date and just plain wrong. All carbs turn to sugar once inside your system, some quicker than others. Try to remember that Carbs = Sugar and you won't go far wrong. The worst culprits are rice, potatoes, bread and pasta, plus a lot of fruits. A few nurses are more enlightened, but they are a rarity.
The others above are right in advising you test out your meals by testing your blood immediately before you eat, then ideally at 1 hour and 2 hours after. You can then see what difference that meal has made to your sugar levels. be prepared to be in for some shocks if you eat a carby meal!
As for your blood tests, I suggest you ask your doctor's receptionist for a copy of the computer print outs because I'm not at all sure which tests you have had as your post isn't really clear. You really need to know properly, and will find it useful in the future.
Don't stress or panic. It is all daunting at first but it will soon become second nature. There is so much help and support on this forum, so just jump in and ask as many questions as you like.