Hi Saimaci,
Unfortunately the type of flour doesn't matter- it is all carbs.
With respect to fizzy drinks- I understand what you are saying but maybe just for a month only have the diet ones as that will make it less likely that you will drink them.
You can also try sparkling mineral water with some lemon juice or a slice of lemon. I know it is hard. I find it difficult but stick mostly to water. I also drink tea a bit as I have that black but coffee with double cream can also help.
You don't need to be ashamed- a lot of us understand how addictive carbs can be- for me it is chocolate. I haven't had any since my diagnosis and I miss it nearly every day. I really get it- but the damage that diabetes can do to your body can be severe. For me the loss of eyesight would be catastrophic- I work in a rural legal practise with no scope if I can't see. The fear has kept me going. I'm not going to say it is easy but- you are a lot younger than me and I would hate to see you have some of the possible consequences of uncontrolled diabetes.
And remember- you may not have diabetes but any steps you take now will help you prevent developing any more insulin resistance then you may have at the moment.
Let us know the results of the retest.