Cold sore contagious?

My husband woke up this morning with what he thought was a small pimple on the very corner of his mouth.

Throughout the day it’s gotten bigger and he’s pretty sure it’s a cold sore/hsv1 breakout.

He gets about 1-2 cold sores a year when he’s stressed.

Without thinking, before bed, I gave him a peck on the lips. We both realized what happened and freaked out.

I immediately went and washed my lips and hands (probably silly and doesn’t do anything to help)

There was no contact made on the cold sore itself though as it’s on the far corner of his mouth and I kissed the front. The cold sore isn’t open either and he’s still not even sure if it is a cold sore or just a pimple.

I’m not worried about “catching it,” as I have hav1 as well but haven’t had an outbreak in years.

I’m worried about one popping up next week for our Mother’s Day family pictures.

And worried about kissing my 7 month old daughter.

So my question is, how long after potential exposure would I experience an outbreak, if at all?