I am in the same place as you except I am a lot older and wish counselling services with training in psychology had been available at the time. I definitely needed them at your age, and think my situation today might be a lot better with them.

Anyway, with OC symptoms and temper tantrums I thought I might have BPD, but actually ASD seems a much better match for my case. People keep telling me a diagnosis would be of no use but I am convinced of the contrary. It would help me with positive acceptance, and even at my age some coaching as well as a more structured life style should benefit me if I really have what I think I might have.

So I am going to get assessed for ASD, and will gladly pay for it myself, as I don't think the public system would bother.