Well that clearly wasn't catchy enough 
Perhaps I should rephrase as AIBU TO THINK MY RELATIONSHIP IS FUCKED?
So one of the DCs just got diagnosed with autism. It's taken two and a half years of assessments /appointments etc, had an IEP at school for a couple of years, multidisciplinary assessment etc. Clearly autistic.
DH disagrees. Says that the spectrum is a load of bollocks, it's just middle class bullshit, he doesn't want DC going to any SN accessible activities because they'll just learn how to take advantage of it and learn to be more manipulative. Ditto me going to any coffee mornings etc.
I offered to sort an appointment with the consultant paed or the senco - 'no way, of course they'd say that because it keeps them in a job ' at which point I said you sounded like a conspiracy theorist.
FYI he was aware of process, appointments etc.
Essentially, he is saying that I'm a liar and have munchausens by proxy, and I'm so good at it that I've convinced everyone. Plus autism doesn't really exist.
So now I feel very hurt, insulted, shocked, and like I don't actually know him at all.
I don't want him here. I don't want him near me. I don't want to be with him if that's what he thinks /believes.