My thoughts are that we have an emotional history from inception and even then I think of it as misty beginnings because it's coming out of the emotions of the parents.
I found it very soothing to recognise I have an emotional history because it pegs it down to a time line - it happened in the past.
When I arrived home earlier on today it was to find my cat in a more traumatised state than other times I've been away and she'd been feeling frightened and overwhelmed and now she is lying in my lap so happy and relaxed she's gone all floppy.