What age did you get tested

What age did you try to figure out if you had autism or adhd? Did you have any anxiety about what you would find out?

Side note: I made a different post like ten minutes ago but deleted it because I felt like it wasn’t understandable and was making me anxious but the post was about testing anxiety I just want to know a different perspective and if I should even attempt to learn more about it I’m 18 so if I try to figure it out I’ll probably be doing it alone.