Hello
@Liverpoolfc, welcome to the forum
I think
@Freema may have forgot to provide a link for you in her post, so here it is:
https://www.diabetes.co.uk/diabetes_care/blood-sugar-level-ranges.html
Your profile says you are pre-diabetic, was this confirmed by an HbA1c test? The symptoms you're presenting are certainly classic hyperglycemia ones. Are you also urinating a lot more than normal?
It's possible that your body is struggling to deal with carbohydrates as well as it once did and as such you may have progressed from pre-diabetic to diabetic. The only way to be certain however is to visit your GP and request an HbA1c test. For the results to be most conclusive, it's best not to make any drastic adjustments to your typical diet. Although reducing your carb intake will more than likely improve the way you're feeling, that may also impact the results of the test too...