conginition my first memory

A: memories: when I was 3, there was an "old" cockroach that fell from the ceiling and hit my face. I was frightened, I ran to my mother crying for help. I could still remember my mother is still watching an entertainment t.v program. (I could even remember the name of that t.v program and, it was around 10 pm). I could clearly remember that my mother told me, "don't be afraid of old cockroach, it won’t harm you, come sit beside me and let's watch t.v together. I will sleep beside you to night to ensure you that there will be no more cockroaches" my memory stopped from there, the scene of my memory was really vivid and I could recall every detail even until now.

B: during class, we shared our first memory of childhood, and we concluded that most of our memories are constructed by our parents, photos, and our own emotions. We could not really remember any memories at the age of 5, but I think this does not apply to me because my parents did not remember this event at all and there was no photos. I think I remember this incident is because it is a very strong negative emotional stimulus which will cause me to have a vivid memory of this event.