saw something and now i cant unsee it

I have had the same false memory/instrusive image of me doing something horrible to someone when I was 12 and they were younger. It is a memory based on a real event. I truly don’t know if it’s real or not but obviously, the more I think about it the more I think it’s true. This has led my mind to become slightly paranoid. I worry that if this horrible image in my head is true then one day the person I might have hurt will come and k*ll me. I’m really scared I feel like I won’t feel better as long as this “memory” is in my head. Does anyone have advice?

Okay so I'm young. A bit young than u might Imagine. Me and my boyfriend where bored and I searched up gay porn js as a joke on google. It was completely blurred. And we where js talking about our truma, and personal stuff while literally just looking at the titles. And I saw a title. A title that has trumstixed me before (I saw the actual video before involving a minor. ) and I clicked on it, still heavily blurred to show my boyfriend the title. And i said baby this really effected me this video. And then I looked below it, same video, blurred. Different title. And I clicked on it to stupidly read the other title. And it FUCKING UNBLURRED. and I SCREAMED saying to my boyfriend if he saw it. And he said no he looked away. And he was so unfazed. And I asked chat gpt about it and it said what I done was NOT okay. Because I looked at child stuff on purpose? My heart has just SANK. self harm urges are back. INTENSE confession compulsions to my mum are back. What do I do. Please someone help.

+ ZOCD +18 & triggering warning last night whilst trying to enjoy myself and do some self care and watch some p0rn. i use twitter to do so and decided to look at an account i was unfamiliar with just to see what they had going on. all of the content they were posting & retweeting was normal and par for the course where out of NOWHERE i see a video of a dog about to start interacting with someone in a inappropriate way. by the way i was scrolling i only saw the top half of the video before gasping and immediately swiping out of that persons account. after seeing that i felt sick and guilty as if i was complicit somehow by not going back and reporting and blocking that account or trying to do something positive to change the horrors of what i just saw but i know better than to try and find it somehow and potentially exposing myself to viewing that again. but now im sitting here with a lot of what ifs in my head varying from “the content you usually watch is from a very specific type of person, what if you’re fetishizing?” & “what if since you were thinking about said specific type of person and saw something like that amongst normal videos of again said specific type of person what if you associate that video what that and never feel normal about your interests and hyperfixations?” now i’m feeling extremely anxious and cannot relax and try to get some sleep because of this. does anyone have any advice on how to ease my compulsions and anxiety??? is ERP a good option for this???