Ok, so here's my question. Do all herpes sores on the mouth look like a blister? The reason I'm asking is because right after I started seeing the guy that most likely infected me I started getting a few pimples around my mouth and on my nose. Mind you now, I don't get pimples at all. Maybe one every now and again. Well, I got one right on my top lip. Like where a cold sore would be. But it was just like a pimple. I did give oral to this man on several occasions and he gave me oral once. Could this be herpes on my mouth?