I've been too scared to ask this for a while now, but here I am about to give my testimony

I can vividly remember the first time I masturbated: I was 5. Obviously, at that age, I had no clue what I was doing, but I remember sitting in my older brother's room and watching this TLC Baby story show, and getting off to the sound the women made when they were giving birth. From there on, I would creep downstairs to my family computer to search for birthing videos so that I could get off to them (again, had no idea what I was doing, I just knew it felt good). Thinking back to it, I think I liked the sound the women made, but also the encouragement and positive words they were receiving. From then on, it moved to watching sex scenes in movies and TV shows, to then my childhood fear turning into a hypersexuality, and I could get off to women (and only women) throwing up. It was the same reason for the birthing videos, the sounds and the encouragement from the people around them (But that's for a different story hahaha..). Then when I turned 12, I started watching porn videos, and it's been that since then. It wasn't until I was 14 when I realized I was masturbating and I wasn't the only woman on earth relieving herself.

I'd tried saying this one time (excluding very specific details) to my best friend, and she did not believe me. Saying it's because I hadn't hit puberty yet and blah blah blah. Has anyone else had this occur to them?? The youngest I've heard so far was like 11 years old.