Confused

So I am 25 female diagnosed with ASD a few months ago, I’m finding it hard to accept not that it changes anything about me. I’ve always known something was different from being a child but was diagnosed with OCD etc. I decided that to go for an assessment just to talk and see what they thought which resulted in ASD. I guess where I can socialise etc Can they get it wrong or are they pretty good with diagnosing? I don’t know just wondered if anyone els was in denial at first.