Is it normal that i was into bdsm at such young age

First of all, let me start off by saying that when other people look at me, they would have no idea that I am a girl that is into hard-core BDSM. I have not met a single person in real life that is into bdsm and I haven't told anyone either. I realized that when I was little , at age 6-7 (before I even KNEW what sex or bdsm was) I would feel weirdly about people tied up in cartoons or kidnapped in superhero movies and wanted to experience what it would feel like. I would masturbate (again, I didn't even know what sex was nor I associated these behavior with sexual pleasure- I was too young) to fantasies like being tied up just because it felt good. It wasn't until I was 13-14 when I realized that this had a name to it and it is like a sexual fetish. From young age, I didn't tell anyone about the "fetish" because I thought it was wrong. I was disgusted by it when I found out porns and different online communities but learn to accept this is who I am. Now I can not even masturbate to anything other than bdsm stuff and since I had associated sexual pleasure with bondage from very young age, it is very hard to reprogram my brain. I do not plan to actually try bdsm stuff and I want to keep it in my fantasy. However, I am afraid I won't reach orgasm on my first "normal" sex because of this. Is this normal? what should I do