I wouldn't worry at all about oral herpes. You've heard of cold sores, right? Fever blisters....
Those are forms of oral herpes and if anything, it's just annoying. It can be contagious, just don't kiss or let anyone drink after you when you have a sore. That's all. It's really no biggy at all.
My husband has oral herpes and I've never even seen a sore. Ever.