The explanation of Indigo child isn't something I really agree with.
However, and this may out me, but hey ho.
When I was 2 I told my mother I had been here before. She was stunned. I went on to tell her about what I saw and felt when she was pregnant with me. I do not remember all what I said, but I do remember the things I saw and still have those images in my head today as an adult. I remember when she was only about 12 weeks pregnant, that she felt sad at a fairground with my grandparents as she couldn't go on the rides.
I remember being on the plane, on the way home from America. I remember one scan and the last thing I remember is being wrapped in a tight yellow blanket. She tells me what else I said, and saw but I don't remember those now.
My son is 4. He often says to me "Mummy, when we go through all of our numbers, we come back as babies don't we"
This has expanded more recenlty to "Mummy, when I'm a baby again, will you and daddy be my mummy and daddy again?."
I don't encourage or speak about this with him much, as I'm pretty lost for words and not sure of the right things to respond with. I just say "do we darling?" "I will always be your mummy" etc.
I am not a hippie or overly spiritual, but I cannot help but believe in the soul and the travels of the soul because I have very real memories of my mother being in early pregnancy, etc. So i don't even feel I have a choice but to believe that our souls travel, other than that I have no idea about all this stuff.