Ughhh

My boyfriend has a fever blister and he just kissed our 4 month old on the top of her head he forgot he had it now I'm just pancking i know it's dangerous for a newborn to get herpes/ cold sores but shes 4 months now so is she fine? Or should i get her into the drs Monday and let them know?

His sore is also dry up he had it for a a few days now