Was I too young to remember?

I don’t know for sure if I was molested. I feel like I must have been because for as far back as I can remember I’ve been absolutely obsessed with sex. >!At 3 years old I knew three things:!<

!- “sex” was touching and sucking each other’s genitals!<
!- this is what grownups did!<
!- I couldn’t let anyone know that I knew this stuff or I would get in big trouble!<

I did stuff in secret. I masturbated every day. And until my teens I felt deep shame if I let on that I found a girl cute.
I really don’t think it was porn influenced because I remember my first glimpse of porn and it happened when I was like 6/7 as I passed someone’s room. Like that image is burned into my brain as my first porno.

Well now I’m a 35year old bisexual male with an insanely high libido, a partner that points out my sex obsession, and I just want to know what the root cause is.