So we had a relative (my aunt) visit my baby and we are super close so I happily welcomed her. My baby is 3 weeks old and I'm super tired and had my entire family around when my aunt walked in so I didn't see anything on her lips/face and she held baby and kissed his head twice. It was a few minutes later he needed a nappy change and I saw a cold sore!!! I feel severe panic right now and anxiety. I cleaned babys face and head but is there anything else I can do plz help