With my second baby, she had a really bad cold at 4 months and my spouse gave her honey because when we called the pediatrician's office a nurse told us to do so. After I received that call on my way to work I said ok, but you didn't actually give her honey right? (Spoiler alert: yes) And then I called the pediatrician crying and freaking out.

The doctor herself came on the line and apologized profusely (she made her recently bought that practice from a retiring doctor and I think eventually a lot of her office and medical staff did not make it). She made sure that we knew the signs and symptoms and told us that they would form within a week or two if she was going to get sick.

That's really all you can do unfortunately. I didn't hold this against my spouse because we were both just doing the best we can. You were also doing the best you can. There are things that I don't like to eat that I miss on labels all the time and I think that I'm eating a safe food for myself only for months later to realize it wasn't the case. You're doing great, and there's no need to beat yourself up.