Hi, as above an idea of what sort of foods you are eating might help.
Beware of hidden carbs, eg: most below ground root veg and lots of fruit are high in carbs, eg: banana and exotic fruits, pineapple, etc. Plus most "ready made" / ready meals" can be high carb.
If you have not already done so, check out the learning zone on this website and also the eatfreshwell website and the sugarfreelondoner website, for lots of good diabetic friendly info and recipes/food choices. The carbs and cals book (written in conjunction with Diabetes UK) is worth a look too.
Cheers