@ToThineOwnSelf
I am quite upset by the thought that your boyfriend thinks you shouldn't have children if you're autistic. (I realise you haven't yet got your diagnosis but it seems very likely).
Yes, autism is inherited. Three of my four children are autistic. They are wonderful human beings and I wouldn't be without them.
What your boyfriend is essentially saying is that he would prefer any future children not to be like you. I find that unacceptable. He is saying that you're not good enough yourself.
I struggled throughout my life, not knowing my diagnosis, not even considering such a thing. I did have a very successful career, though, despite the struggles. It was my wonderful second husband who gently suggested that he thought I was autistic about four years ago.
Once I looked into it more (and bearing in mind my children's diagnoses) I realised that of course I was autistic and had ADHD as well.
Knowing why my life had panned out the way it did was just brilliant. I finally knew why people thought I was odd and eccentric. I joined a long, long series of dots and felt gradually better and happier.
Having children, any children, is always a gamble. We none of us know what they'll be like and if they'll have disabilities.
Autism is not the end of the world. I can see many positives, actually, from my own point of view. I love (really, really love) my detailed musical abilities, and my extensive knowledge of true crime and Agatha Christie books. Oh, and Dorothy L. Sayers (another two women who would surely be diagnosed as autistic today).
Anyway - I'm rambling now. But I would actually rethink a relationship where my own essence, my own being, my own personality and quirks were seen as somehow wanting - for that is what your boyfriend means - if our children are like you, I do not want to have them.
I hope that makes sense.