I can relate to your post.
I was raped by a stranger as a child. It was something that I really never thought - or let myself think - about. Until I had a baby myself. That's when panic attacks began. I started to obsess about things happening to my son. I'd stay up all night, scared to sleep, because I needed to "protect" him. After getting some counselling, I realized that I was just reliving my own trauma.
However, since something has happened to your child, I can only imagine how devestated you must feel. A parent's worst nightmare come true.
My thoughts are with you and your family.