Hi
@shrutidevarashetti and welcome to the forums.
Congratulations on your pregnancy.
My first recommendation is that you immediately phone your GP, you'll need a referral to a diabetic antenatal clinic asap.
As regards the high hba1c, I'm not going to lie to you here, most diabetic clinics prefer people to have a stable lower hba1c before getting pregnant. It makes the statistics for a successful pregnancy better, but that is all they are, statiistics.
You have to remember that a lot of new pregnancies (whether the mothers are diabetic or not) don't result in a baby, no one knows why. Some pregnancies just aren't viable, and end naturally, particularly in the first 3 months. Hopefully this won't happen to you but even if it does you'll never know whether the result is influenced by your undiagnosed diabetes or whether this would have happened anyway, even if you weren't diabetic.
I'm sure your team will do all the tests to find out how your pregnancy is progressing and will help you get the best care, please contact them as soon as possible.
Good luck from a T1 who as had 2 diabetic pregnancies (my youngest is 27)