Welcome to the Dermatology Expert Forum! Please, do not worry. Nor it seems like you developed a cold sore (HSV1 infection), nor it is likely for your baby to acquire one after potential “exposure” you described.
In general, a mother can transmit herpes simplex virus to her child (kiss, shared cup, utensil, or toy). Baby’s primary herpes infection could be very mild, or could manifest as mouth soreness, gum inflammation, fever, swollen lymph nodes, and a sore throat.
Wishing You Optimal Health,
Dr. Jasmina Jankicevic