Hi, Nancy. Welcome to this site.
I can't help you too much with the dietary advice. However, until you see your doctor, I have a hint: Eating more protein at this point is probably not a bad idea. However, rather than eating a couple of handfuls of pretzels (which contain refined carbohydrates), you would do better to eat low-calorie/low carb vegetables like celery, lettuce, cucumber, etc.
I have a friend (type 1) whose blood sugar goes through the roof when she eats pretzels. So, for some people at least, they're not a great way to keep you blood glucose down. Also, there is almost no nutrition in pretzels other than calories. By comparison, vegetables have lots of fibre, vitamins, minerals and phytochemicals which help fight cancer and prevent other problems, including ones related to diabetes.
Another thing you might want to try is exercise. However, be careful. If you blood glucose is too high, exercise will make it go higher. If it's close to the normal range, exercise should be fine and should help bring down your reading. Not only that, regular exercise will increase you metabolism, help you lose weight, etc. In the long run, it is an excellent way to help control your diabetes and bgs.
If you don't mind my asking, and if you don't mind replying, why have you never discussed your diabetes with those who do not have it?
Anyway, take care, and I hope your blood glucose tests and your doctor's visit go well. Please let us know how they go.