Exposed baby to cold sore🤔

My baby is 12 weeks and she has flaying hands.. and she touched my lip.. while feeding..i wash her hand right away before she put it on her mouth..Im prone to getting cold sores.. I have not had one in the past 4 months.. and I’m taking valtrex to prevent.. not sure if I should be worried or let it go since I don’t have a active cold sore😔🤷‍♀️🤔