Harm OCD and false memory OCD

when I was 15 soon to turn 16, I met this girl in a IG group chat made by our mutual friends. We started talking and eventually we started flirting and talking sexual towards each other, though eventually we stopped talking because she was being really weird. A couple months later In July of 2024 my friend found out that she was actually 13 and that she lied to me about her age. It's been 10 months since l've found out and I still feel so disgusted in myself. I had my suspicions at the time but I let them go since she said she was 16 turning 17. I was completely oblivious trusting someone I only knew online especially since i've never seen their face either. i'm struggling on what to do since i've been suffering with POCD since I was 15. Till this day I still feel weird and disgusted in myself because of that. But it feels ironic since i'm sexualizing someone that's 2 years younger than me and I waited to confirm she was around my age range to sexualize her. I feel so weird and guilty about it idk what to do

I was on literotica (an 28+ erotic chat site) and was about to sext with her... she was getting high and wasted... before she stopped responding... i was checking to see if she could continue by explicitly flirting, but when she couldnt respond on the chat I stopped and deleted the chat... she then chatted with me again on the site saying she didnt remember we were sexting... when I asked her about it days later, she said "it might've been serious for you, but it wasnt for me..." My Harm OCD is saying that I unintentionally harmed her through this online chat... Im so so scared...

*tmi warning* I'm so worried im a P. Ive been crying daily unable to do anything else but ruminate over my real events. When i was 14 (before ocd) i was watching adult content and it was censored. The woman had similar features like hair and skin color as my niece. I remember noticing that and saying "huh i guess I'll imagine that as the adult version of my niece" and I did and after i was finished i moved on and didnt think anything was wrong. I dont know if i ever thought about that again? Its so blurry ocd keeps saying i did it again in a different time but i dont remember its too blurry and its scaring me so badly! I didnt even remember this till like literally last week and i wanted to die! Im 20 for context. When I remembered i immediately broke down in tears. I vaguely rmemeber this other thought i had of her when self pleasuring when I was 16??? I think it was a testing thought out of distress? But im not sure at all! It was extremely vague image and unrealistic i dont think I liked it but maybe i did?! Im so distressed its like i remmeber 2 versions of this particular event which is why I think its ocd false memories from there. Ive been ruminating and spiraling for almost a week. I keep crying i havent ate well at all in days ive been honestly dehydrating myself and i cannot sleep. I feel like a monster. I did the mistake of researching last night and kept comparing myself to the "criteria" of those sickos and like I felt so distressed. I also have been asking ai for hours on end everyday. I feel so distressed im literally crying rn as i write this i cant calm down i feel like this sick individual even tho I dont even like thinking of that at all i dont think I meant ill intent when i was a teen but its killing me inside. I would NEVER harm anyone nor want to or plan to, deep down i know I would never act out in those evil ways but like whats killing me is what if im attracted?! Is this a sign?! Am i one of those people?! Am i attracted to my niece bc of those 2 maybe even 3(??)thoughts years ago?! Did i mean ill intent?! Am I an actual danger?! Am I a monster??? I have so many urges to confess to my mom im so scared what this all means or could mean. I feel so alone and scared. Like legit whenever i get intrusive thoughts about gross stuff i feel disgusted and anxious and push it away. Those thoughts do not bring me pleasure whatsoever but this real event is making me doubt my own identity 😔