Need Advice/Support

Hello, everyone. So I’ve been recently diagnosed with Autism and ADHD professionally and I’m A) doubting it and B) thinking that’s it’s possible I have those things but I don’t think that creates a lot of my problems. I live with my grandparents and they helped me get those diagnoses. My mother has thought throughout my teenage hood that I had BPD (I was never formally diagnosed) and she read books on it and took me to a DBT group ( I was horrified that she thought I was that because then I MUST be a bad person and unloveable if I had this and I basically cried all the time and got angry and resisted even though I tried to appease my mother by doing DBT somewhat I never really committed all the way, and relapsed to old behaviors after that therapy. I think I was like 13-14. ) I think now that she’s probably right, I fit all of the basic 9 criteria to some degree. It’s awful. I don’t have a diagnosis because I just got the Autism and ADHD one and the rest of my family doesn’t think I have it except my mother. Plus my grandparents have spent too much money already and I’m not going to do that to them. I also suspect I may have some narcissistic traits, but those could be just traits of BPD as well that are more of the unknown and selfish aspects of it, so I’m undecided there. It’s also possible that I have some sort of trauma disorder. But I’m undecided on that because I don’t remember any BIG trauma. And I would be hesitant to announce that to anyone because I don’t think they’d find that valid. So there’s a LOT. And I don’t know what dx is what and where the overlap is, etc. I hope that someone can give me advice for this. I don’t know what to do or how to figure out what’s really going on and what I have. Thank you! Sabrina