Is diagnosed actually diagnosed?

[Cookie101]

G'day Folks,

Just wondering about the diagnosis process. I was diagnosed, given some therapy (where I was told I'd likely had it since my teens) and then went out into the world. I didn't know what else to do so I just figured it out and learnt to sort it myself. Now I've had issues which have made me worse and I've just had a phone conversation with a counsellor who after ten minutes chat and without actually knowing my medical history has decided that I don't have depression and anxiety disorder and that I should just let my issues go and move on. Really confused now. How do I get a proper diagnosis of that's not what I got?