Covid positive with 1 week old

I was recently exposed to Covid by a family member. My husband tested positive and is having some pretty bad symptoms while I on the other hand just have a sore throat and headache. So far the baby is not showing any symptoms or seems to be affected right now. I just feel so terrible that this has happened. We’re both vaccinated and have our boosters. The worst part is the person who we were exposed to didn’t even tell us she tested positive knowing she was just around my newborn. This just adds to the feeling of not being a good mom. 😭 I’m trying to avoid exposing my daughter just in case she hasn’t gotten it from us. I’m wearing a mask, sanitizing and making sure to isolate her as much as possible.