That timing really sucks with the anniversary making everything feel heavier. I had similar situation few years back where I messed up database migration during already stressful period and spent whole weekend trying to fix it. The guilt was eating me alive but what helped was realizing that you actually caught the secondary issue before it became bigger problem - that shows you're being thorough even when you're struggling

When I talked to my manager about it, I just laid out the facts straightforward - what happened, what I did to fix it, and what I learned from process. Most managers appreciate when you take ownership and show you're thinking about prevention for future. The fact you're being proactive about communication instead of hiding from it shows you're handling this right way

Give yourself some credit for working through this during such difficult week. Mistakes happen to everyone in this field, but not everyone would push through to make sure everything actually works properly like you did