Hi
@Polly4592 and congratulations
@claire1991 has given very good advice, which I echo. Get used to testing your blood a lot, especially after meals, as that's often a time of highs. If you haven't already, you may also want to do some nighttime tests so you can see what's happening there. I tested around 2am every night I was pregnant.
I'd also add that it's probably sensible to get in plenty of hypo treatments like Lucozade. Hypos are common in the first half of pregnancy, and can come on quickly, need more treatment than normal, and can happen at weird times. So get Lucozade, glucose tablets, little packets of sweets, etc It's good to have a variety as you may get fed up with one, and also nausea can alter your sense of taste.
You may also want to have a read through the pages here so you can get an idea of what pregnancy is like with diabetes. It might give you ideas for questions to ask at your appointment too.