Hi Pao Wow, welcome to the forum. The first thing to realise is that you are not alone, and that there is help available. I have been a diabetic most of my life, but I am new to the low carb diet. My suggestion is to read Dr Bernstein's complete diabetes solution. It answers a lot of questions, and also suggests a number of medical tests that can be useful for a diabetic to get. Dr Bernstein is a diabetic himself, and has been following a low carb diet since the 1970s, so he is fairly well informed!
There is also a very useful video that Dillinger, another member of this forum, alerted me to. It's an Australian doctor with diabetes explaining his reasons for going low carb. Here is the link:
If you are committed to a low carb diet, the other thing you should do is to research side effects and how to avoid them. For instance, I have found it very easy to get dehydrated on a low carb diet. I have had some unpleasant experiences of sever abdominal cramps, and bright orange urine! Thankfully, the solution for this was just to drink more water, and the symptoms immediately disappeared. The main thing is to scour recipe books and the internet for foods you enjoy. I am actually eating a far more interesting diet now than I ever had when I was high carbing. The particular stars for me are celeriac, almond meal (also called almond flour, it's essentially almonds that have been ground up. You can get them in most supermarkets) and cauliflower.
The best way to manage diabetes is to get as much information as you possibly can. High readings are something to work on, but there are solutions available. If you are indeed type two, my advice may be limited in its usefulness. I have been on insulin since the age of three, so the idea of injections is a perfectly normal part of everyday life for me. However, for a type two, it may not be necessary or even beneficial to take insulin. There are medications available that can help control bloodsugars as part of a diet controlled regime. The key is to really grill your healthcare team. Always remember that the NHS is funded with taxpayer money, so in effect you are paying your healthcare team's wages. Never feel like you are being an inconvenience, because your health should be just as important to them as it is to you. When you get a medical test, ask them what the results mean. Ask 'is this normal, and if not, what steps are available for me to correct this?' It is very easy for doctors and long term diabetics to forget that new members of the diabetes club are often coming in blind to what is generally a vastly misunderstood condition. If someone says to me 'My HBA1C was 12.6' I will know their diabetes is wildly out of control. On the other hand , that sentence may have meant nothing to you.
It sounds like you are taking appropriate steps to understand what you are going through. This forum is a wonderful place that has helped so many people, myself included. At all times please realise that you are not alone, and even if your doctors are not giving you the answers you need, someone here might be able to. Best of luck to you