Hi Rhino. It's a good idea to eat some fruit , as grogg said berries are usually best, but you really won't be able to tell what your body can tolerate without testing your BGs, so if your doc/nurse won't provide one and you can afford to fund one ,then the SD Codefree on Amazon, is much cheaper to fund than high street brands , where the testing strips cost between £15 - £25 for 50 .
To check your BGs you test just before eating and two hours afterwards .
It's very early days for you, what I suggest you do till you get a meter is , cut down a bit on the carby things, remember this is a marathon not a sprint. Then when your able to test your own BGs you will see if your body likes different types of foods and wich sends your BGs haywire, we are all different in what we can and cannot tolerate. Another reason for cutting down slowly is, a rapid drop in your BGs can cause your brain to go into panic mode because it thinks your starving (our bodies run on glucose) and it will be doing all in its power to alert you it's not happy, It's what we call a false hypo (low blood sugar) real or false they are not nice.
Their is a lot to take in esp in the beginning , just remember we've been where you are now and come out the other side ,many of us are much healthier/fitter than pre diagnosis, speaking of fitter , exersize is good for us and helps with bg control too.