Since it's been commented on, yes, my memory is pretty good.
I remember even at grammar school, a friend was amazed that I remembered our (joint) first day at primary school - I was amazed that she didn't
The first thing I remember that's definitely not something I was told, and later assumed I remembered, is my kitten.
One day my mum and I walked into town, and she stopped outside a little newsagents, with one of those wire-caged notice boards outside, where people could put postcards with items for sale, offers to do ironing, etc.
I clearly remember us standing there, me stretching a little to hold her hand, whilst she read, and being frustrated that I didn't know what the words said.
Then we went inside, and she talked very quietly to the lady behind the counter.
A few days later it was my birthday. My dad arrived home from work on his motorbike and walked in with a cardboard box, which they both gave me. I opened it, and inside was a tiny black kitten with a white chest (I'll find a pic to scan).
That was my 2nd birthday
We grew up together, she died when I was 23...
I also know that once that happened, I recognised and understood the word kitten from the postcard