Cold Sores 😱😭

I have had cold sores ever since a family member kissed me when I was a kid... I just got one again a couple days ago and I have a 3 week old. I am terrified and morbidly disgusted wth myself. The one person who should be safe with baby is the one who is the most dangerous. I wash my hands religiously and I've really only been holding her while I breastfeed, then I pass her off to my husband. I'm terrified to even look at her or touch her clothing or burp clothes. How does any mother get through this? I'm absolutely sick about this. I have a prescription for Valtrex and I put topical stuff on it too, so it's actually almost gone, but I read that I could still pass it to her even when I don't have one on my lips. I'm terrified. Any words from the wise or from other mothers with this struggle is appreciated.