I'm 48 years old born in 1969 in the UK and you're therefore just very slightly older than myself, except since I had very slow speech development as a young child and both my brothers were low functioning autistic children our family got lot of attention from the medical experts, because of this I was one of the minority of children who was first officially diagnosed in the mid 1970s as autistic along with both brothers, although it was strongly suspected even before that and my parents obviously knew something was very wrong. As I grew up I started showing great improvement and I'm now on the higher functioning end of the autistic spectrum with various traits, but my now adult brothers sadly remained low functioning and for instance can't count to 5 or tell the time. I actually got a fresh diagnosis more recently, a couple of years ago since for some reason my paper medical notes weren't transferred to computer when the system became fully computerised.
It's good that you are relieved by your diagnosis and I'm sure it helps and confirms many things that you've experienced throughout your life so far. I hope to see you around these forums and welcome to ASPIESCentral.