Sometimes it's not easy to just let it go tho.....I'm glad your doing better today. I read your posts yesterday. The truth I am realizing since reading it is that everyone must have some silly, stupid, crazy or whatever thing it is that bothers them
Or they regret......I have a "thing" too, & the really stupid thing about it is I was like 10 or something.......
Anyways I'm trying to say that I understand, because when I have anxiety bad, really really stupid things bother me to the point of not getting off the couch. Everyone has something I guess, it's just hard to see because ppl don't go around sharing.

I used to & still do write things down. In the anxiety state I'm always analyzing & reamalyzing past things that bother me. Somehow notes help, so maybe the idea of the letter to your mom will help.

I have had anxiety since I was about 14ish (I'm 30 now). But even before then I would feel like I had to confess everything to my mom. I would feel so guilty it was debilitating......but most things were really silly & not even bad things to feel guilty about. I now feel like I have to confess things to my husband. Sounds like I have crimes to confess but really they are dumb things, he has just laughed at me.

If telling your mom will help, try the letter first & see how you feel. From what you said she would be forgiving, plus you were not feeling well at the time.
Good luck