Hello
@Julie1419,
Alas, you are by no means the first person to ask such questions and it is both unsatisfactory and depressing that the assistance given can be so woeful. But there is good news also - in that you are prediabetic, which means you are at risk of getting Type 2 diabetes, and with relatively minor adjustments in your lifestyle this can often be reversed. Also you have found this forum where there is a huge wealth of experience that members are happy to gently share with you.
In the Welcome and Getting Started opening section of this Forum is a posting that explains a lot more about prediabetes. The link to that is here:
One important first step is to get back to your Surgery and get the exact reading that has defined your prediabetic status. A number between 41 and 47 mmol/mol is normally given (sometimes described as between 6% and 6.4%). Knowing that will immediately tell you how close you are to a formal diagnosis of T2 diabetes. In the possible event that your Surgery is obstructive in telling you this [it happens and for the life of me I don't understand why ....!] politely but robustly insist you are told. It is your body, your medical info and you need to know where you are starting from.
The Surgery Nurse was broadly correct in saying that losing some weight is extremely helpful in reducing your Blood Glucose (BG) readings along with exercise and awareness of what you would be best to avoid eating. Without knowing what the booklet you were given tells you, you need to reduce your carbohydrate food input: this disease is about blood glucose being too high and ALL carbohydrates are converted into glucose. So it's not just the sugars and sweet things, but high carb foods such as bread, pastry, potatoes, pasta and rice. This does not necessarily mean you must instantly stop eating all of these things, but you would help yourself by reducing the quantities of high carb foods with reduced portion sizes and replacement wherever possible by non-root vegetables that are much lower in carb content.
I'll step away for now. Others will add far more value than my comments. Meanwhile sorry that you are having to post here, but Welcome to the Forum and I hope we can help you wrestle successfully with this prediabetes "thing" Thatsand turn it around.