Hi
@Karenchq
I sympathise with your feelings. I honestly couldn't believe I'd got Type 1. I didn't know a lot about it, and I think that lack of knowledge made me feel worse because I thought maybe I'd done something wrong to get it. I also felt angry as well as upset. I resented the fact that I'd got it because, in my mind, it was linked with illness and failure somehow. But now I know better and I understand that's not true
What helped me was understanding that Type 1 was an auto-immune disease and that it wasn't my fault and it didn't mean I'd done something wrong.
It's a hard diagnosis to take on board because Type 1 means a huge lifestyle change. Not just the injections, but having to think about what you're eating, your blood sugar, when you're going to exercise, etc. BUT it does get easier. You learn to fit it into your life and you're still the same person as you were before, just with an extra thing to think about.
I didn't have any tests to confirm my diagnosis. I had become very ill and had lost a lot of weight very quickly. I was admitted to hospital as an emergency and started on insulin. I felt better very quickly once my blood sugar came down (it was around 25 at diagnosis, which is 450 in your measurements).
My advice is to learn as much as you can about Type 1; learn to count carbs and, in time, to adjust your insulin according to your food and test results; take one day at a time to start with and give yourself time to deal with your diagnosis; and know that you aren't alone - there are lots of Type 1s here who can give you support and advice.
(Note - don't be fooled by the honeymoon period. When I first started on insulin, after a few weeks my own insulin production seemed to recover a little and I began to think that maybe there'd been some mistake in my diagnosis. But, of course, there wasn't. The better results I was getting and my low insulin doses gradually changed as my own insulin production declined. If I'd known that in advance, I wouldn't have got that false hope.)