Should I ask to get specifically tested for herpes? Can they tell by just looking at bump?

I went to Care Now to get a bump on my groin checked out. Showed up after shaving. It wasn’t painful until I squeezed the hell out of it and then it became pretty painful.

He took a look at it and asked if it hurt, and then said it was something-Folliculitis and that I just take antibiotics for it.

But I’m nervous because he didn’t test me for herpes or anything. Can he really tell by just looking at it?