Sounds like a pimple/folliculitis. Both the location and your description of the lesion are highly atypical for herpes, which generally does not occur in hairy areas. Also, herpes lesions tend to be quite superficial, not deeper like pimples or folliculitis (think of herpes as being "on" the skin surface and pimples or folliculitis "in" the skin).
But of course I cannot make a specific diagnosis. See your health care provider if unsure.
Good luck-- HHH, MD