I keep having stomach pain and get sweaty when I meet other people, my brain says confess to random people so they know everything bad about your past how can I stop this

I understand trying to find comfort in your thoughts but what can i do if i can’t keep these thoughts to myself sometimes?

I look back at various past events in my life where I said or did things that I feel really guilty, disgusted, and ashamed about. I replay them in my head for hours. I feel anxious about crossing paths with people that I've hurt or upset in the past or who perceive me badly, to the point that I will avoid going out in public as much as possible. I go out for work, errands, appointments, and occasionally to eat (even though those all give me a lot of anxiety), but I avoid community events where people might recognize me and I tend to isolate myself. The only people I see regularly are my boyfriend, my parents, and my coworkers. I live in a small community and I'm worried about people confronting me publicly and proving what a bad person I must be.

I feel like I need to confess everything to my wife. This week it’s gotten me in a lot of trouble, there’s more I feel I need to confess but I know it’ll hurt her. How do I just not!