Hey moms and dads! Have you had another baby after your autistic child? If so, how did your child react?

Question

I have a child with autism so of course this is why I'm curious. I'm about due to give birth and I've heard from two special education professionals two very interesting opinions. One said I may encounter a very negative reaction from my three year old and the other said I would have a positive reaction. As far as I'm concerned one of them is going to be right but I won't try to assume at this point which one it would be. All I'm looking to hear are experiences from you guys who share the same joy as I, which is being blessed with our little special kiddies diagnosed with autism but by far defined as such in our hearts and minds.