help!

I need advice, I cannot lower my levels for the past 5 weeks my levels have been around 20 mmol/L and been feeling really ill because of it. I've contacted my nurse beginning of last week about it telling to increase my humalog insulin. Been doing so and nothing is happening. What do I do...

I was told i was pre diabetic a month ago with a GP test at 6.4 borderline, I have cut out most sugary foods now. although for the first 3 weeks i was having a "treat" per week (chocolate bar or cream cake slice) I got myself a monitor 2 days ago and have been pricking myself 5 times a day and...