What if I’m a criminal?

Hi everyone, I’m new here, and I wanted to share my experience. I’ve been struggling for over a year now on obsessing over a mistake. And the rumination of the mistake I made has been overwhelming and exhausting in those two years. I feel like such a horrible person. At the time, I didn’t realize what I was doing would affect me so much. When I realized it was wrong, I just said I’ll never do it again, and I moved on. But then months later, I was reminded of what I did, and I felt like I did the worst thing in the world, and that my life will never be normal again. And ever since then, it’s been a constant thought. And it’s exhausting. I have been able to open up to my family and a close friend about it and their reactions were so nonchalant compared to what my brain has been telling me. They say it wasn’t even that bad, and that I shouldn’t be beating myself up. I tell them how badly I feel and they just act like it was nothing. I thought that would help, but my brain continues to tell me how horrible of a person I am and I obsess over this one mistake I made two years ago. I’ve learned from it, I’ve moved on, I’ve opened up about it, I’ve gotten reassurance, but yet it still eats at me. It’s constant some days. Where all I wanna do is lay down in a corner and never leave. I feel like my life will never be normal again and I’ll never experience happiness again. Whenever I smile or feel any type of joy my brain tells me to stop and reminds me that I’m a bad person and I don’t deserve to be happy. Even though everyone tells me what I did wasn’t even that bad. And that it doesn’t make me who I am. But guess it’s not enough and I’m really running out of options.

I think all of us have made mistakes, wether in childhood or teenage years and adulthood. I’ve made terrible mistakes when I was younger ( childhood ) and I’ve been regretting my actions and dealing with severe shame and guilt, I came out okay in the end and been the ideal kid I should’ve been when I was younger. I changed but hearing people like close family saying they would judge past mistakes and you’re allowed to judge, makes me feel horrible. because only if they knew…

i feel like i have been posting a lot about this and i will try to stop since now but i just don't know where to start or what to do, and i can't take therapy right now either. my event is about something that did actually happen; i had a boyfriend and we had a 1.5 age difference (i know this sounds stupid) but the thing is that we both started to sext a lot since he was 14 and i was 15. we shared audios videos pictures ect and i don't know how to just let this go, even when i know that i never really forced him into anything and i was always constantly worried about him being comfortable, when to stop and ect. the memories keep coming back to my mind and the guilt is eating me up slowly because i keep thinking that i'm a predator or a groomer or something like that. i don't know how to deal with the what ifs either, lately i haven't stopped thinking what if i sexually harassed or sexually exploited him or something like that. how do i deal with the cycle of guilt and constant what ifs if i also feel like my event is worse than others i've seen? please help me with this. it's getting a lil tiring and even if somedays i know how to deal with this, i still get really triggered sometimes. this wouldn't even bother me before, i wish i could just get back in time before this theme popped into my mind. my life has been a hell since then and i live constantly scared and suicidal.