What got me researching, was that I had a panic attack the day we brought DD in for her 2 month shots. I thought to myself, We are permanently changing our DD and once we do this we cant go back. I got her the vaccines anyway and I did not like how my DD reacted. I dont care how "normal" they say that is, its not normal to me. I stopped doing it after much research.
I do believe that vaccines may cause autistic regression, but its at the bottom of the list for reasons I no longer vaccinate.