1. This may well be prodrome for you but I still think there is little risk in kissing your child’s forehead and cheek.
2. I don’t feel that you need to wash your child’s hands when he touches your face when you have no cold sore
3. Once you stop the Valtrex for 5 days, the virus will resume it’s normal activity and your immune system will see the virus and mount it’s immune response. My guess is you’ve got a great immune response to herpes already as it has been years since you acquired HSV 1. I guess you could take an antibody test if this is still a worry for you. However, as you may already know, the usual screening test misses 1-2 out of 10 infections so if the antibody test was negative, you could not depend upon those results.