Overwhelmed

Hi, I'm Emma. I'm a stay at home mum. I have a 7 year old daughter, who I believe is an Aspie.  I have a 5 year old daughter who has Autism, and we are waiting for an assessment (School is very sure of the Autism). A 6 month son whom is so different to his sister's at this age that I'm just so mournful of my experiences with my daughter's, because he's following a natural progression for his age unlike his sister's. And then there's me, I always thought I was different because I was poor growing up with an abusive mother, but I'm not different because of that, I strongly believe I am an Aspie too. But all of this has become such a big insight over the last year that it's overwhelming me and I have no idea what to do next. 

The girls are back at school, so I finally have some time to learn to understand everything, I just don't know where to start.

Any advice?