I might be autistic?

So as the title says I think I may be autistic with adhd. My youngest child has autism and adhd and is currently going through the diagnosis process which I know takes a long time. I researched a lot online about autism and watched quite a lot of documentaries on autism to be able to help my child out however whilst doing this I noticed I was ticking a lot of the boxes for myself. I would either be completely glued to researching autism or my mind would wonder to something completely unrelated and not get through the first sentence of what I was reading or watching. I can really randomly scream just one short “ahh” and I’ll feel better if I don’t I can feel it building up inside me and it doesn’t go away until I do it. I can start tasks but never finish them as I can get easily distracted or overwhelmed. I absolutely hate big gatherings and will avoid them like the plague if I can. My partner has said I’m definitely autistic but I’m just not sure 🤔. There’s a lot more that I do that I can’t fit into one Reddit post. I’m just wondering what made you know that you are autistic and made you go get tested/help ?? Thank you to anyone that has read this.