Accidentally kissed baby with a cold sore

No judgment please. This morning my husband woke up with a cold sore. He gets a small one about once a year tops. I’ve never had one even though I admittedly never stop kissing him when he has one. I didn’t notice the cold sore til late this evening, and he had just been kissing our four month old on the cheek right before that. I said wait is that a cold sore, have you kissed our daughter today, and he immediately was like omg I didn’t even realize I shouldn’t be kissing her. We’re both kind of freaking out now. I’m gonna phone our ped in the morning but I was wondering what I should look for or if anyone has a similar experience😢😢. xx