Hi,
Who has told you that those results are normal? Bear in mind that the diagnostic limits for gestational diabetes are much stricter than for 'true' diabetes. This is because there is a much higher risk of complications with gestational diabetes than in a normal pregnancy, so it should be taken seriously.
Have you been prescribed a blood glucose monitor, test strips and lancets yet? Using a monitor will give you a much better idea of how much you can eat of a given carb without going over the set limits at the one-hour post-meal mark (should be 7.8 if your bmi was normal-overweight, 7.0 if your bmi was in the obese range).
I've had gestational diabetes with both of my pregnancies, and both times was referred to the hospital's diabetic dietician service just after diagnosis. Has this happened to you? If not, ask for a referral. There are probably diabetic specialist midwives you can speak to at the hospital too. In addition, several NHS trusts publish their gestational diabetes information leaflets online and some give limits on certain foods (I seem to recall that the South Norfolk trust's leaflet was very good in this respect). I'll see if I can find the link to it for you.
Dietary control of gestational diabetes didn't work for me and I ended up injecting insulin up to four times per day for both pregnancies (since week 17 weeks for my current one as it was picked up earlier, having had it with the previous one) and I have to say that it gives me a bit more flexibility as far as eating out goes. I certainly don't mind injecting, but others feel more squeamish and you might feel that way too, so it's important to make a real effort with the diet control first. Keep a diary of what you're eating and drinking, and maybe start weighing your pasta, rice and potato portions so that they contain no more than 50g carbohydrate per portion dry weight. Eat small snacks between meals and don't worry too much about fat!
Good luck, and let us know how you're getting on.
Jo