Welcome to the forum
@LottieLouLou
We would generally recommend a 'spot check' blood glucose meter, rather than something that attempts to give you an HbA1c.
HbA1c's are generally best done annually (or 6 monthly) at your GPs, as then you will get a 'proper' lab result that you know you can rely on.
As others have said though, a home glucose monitor that gives you a BG value for that moment in time can be a very powerful tool. Your waking/pre-breakfast reading will give a reasonable idea of your general 'background' BG level, and checking before and 2hrs after meals (aiming for a difference between the two of 2-3mmol/L) will allow you to identify foods and sources of carbohydrate that your metabolism is struggling to cope with vs which ones are keeping your BG more even.
It is all carbohydrate that you need to keep an eye on, not just the 'sugars' because both sugars and starches are broken down into glucose in the bloodstream.
Many people find this '
test review adjust' approach very helpful.
As a general guide, ultimately you will want to be aiming for 4-7mmol/L before meals and no higher than 8.5mmol/L at the 2hr mark, but to begin with aiming to keep the 'meal rises' down to 2-3 between the 'before' and 'after' readings is more important than the numbers themselves
🙂