Should I discuss painful memories with my mom for closure or is it OCD?

Does anyone else suffer from ‘Real life events’ OCD? I constantly worry about things I did as a teenager (from ages 15-19) I wasn’t a very nice person and think I was quite a toxic girlfriend in my first relationship. I’m always terrified that people are going to find out and that I’m going to lose my job or something awful. I also think that a lot of people would be so shocked if they knew some of the things that I’d done, and that they would think so much less of me. I feel a constant need to confess or apologise, and wish more than anything that I could erase that whole chapter of my life. Previously in counselling, we looked at ‘black and white thinking’, and I managed to rationalise that everyone makes mistakes and nothing I did was that bad, but I have this horrible feeling that one day this will all catch up with me. Is this just genuine guilt and remorse or is this a symptom of OCD? Thanks in advance.

Ever since my OCD started when I was 14 (I’m 26 now), I get the biggest relief from confessing to my mother. It is getting harder as the years pass to resist the urge. I always feel like confessing all of my past mistakes and sins, even though a lot of it will upset her. But I always get a wave of calm across my body every time I get reassurance or a reaction from her. Idk why at 26 I feel guilty not telling my mom everything. I don’t even know anymore when it is appropriate to vent to her like a daughter and when it’s my OCD telling me to seek reassurance for the wrong reasons. I think of my past mistakes and feel so guilty around my mother.

Ok so this is going to be lengthy and probably have many mistakes so I apologize in advance. I used to live somewhere completely different to where I live now. I lived back in my hometown until I was 10. That was a living nightmare for me. I was bullied lots and had lots of very traumatizing things happen to me that are a VERY big part to my ocd today. When I was very young like 7 or 8 I was at a sleepover with another girl and she was pressuring me into doing things that I was very uncomfortable doing. She was pressuring me to take some of my clothes off. At the time I was very young and didn’t know right from wrong and didn’t know what to do so because she was being very peer pressure to me I did so because I was scared. I have never been able to come to peace with myself after this even though I have been told that I did NOTHING wrong and that I was very young and stuff. But then I moved somewhere completely different, and lost contact with everyone because I knew that it was too much for me to handle. Today someone from there reached out me ( a good person) and wanted to talk and catch up. I did talk to her for a little bit (it’s not the same person that pressured me) and I texted her after telling her how I needed to lose contact with here because so many of my intrusive thoughts came from living there, so being in contact with people was mentally not ok with me. She was completely understanding and all’s good. But I’m wondering. What happened with that girl. Should I fee guilt about? Or is this my ocd. I just need some other opinions. Please help me out!