Good afternoon and welcome Mothrat.
Were you diagnosed when young or were youanother late starter?
It would help us to help you if you could tell us a bit about how you manage your Diabetes.
Apart from this forum, from which I have learnt most of what I know, the best resource for me in understanding why, how, ... is the book Type I Diabetes in Children, Adolescents and Young Adults by Ragnar Hanas. Ignore the age reference, I was diagnosed with T1 at 53, and still find it an invaluable source of clear explanations. It is regularly updated so worth forking out for the latest edition.
I look forward to hearing more from you.