HI @Nikki_D, I may have missed something but how did they diagnose you if you haven't had an HbA1c test yet? Was it a finger prick test?
Whatever your number turns out as, a good start is cutting out starchy carbs as the others have said. There are lots of ideas and recipes on the Food & Recipe and the What-did-you-eat-yesterday threads, so you could have a read around and see what takes your fancy. Green leafy veg, good quality meat, eggs, cream, are all low carb. There are several good recipe books out there if you're keen on cooking (I'm not) so there is quite a lot of choice.
I have found that as time goes on I can tolerate small portions of, eg roast spuds, basmati rice, wholewheat pasta, etc, so things don't have to get worse! Let us know how you get on 🙂
I had a blood test done cus i'd been really tired lately and I guess it showed up on there or my dr was concerned anyway so they called me in I had to give a urine sample and he tested that too and diagnosed me then. I've still got to go get the HBA1 done hopefully soon