Herpes wouldn't produce blood like that, and its probably just a pimple.
AJ
I had that same problem 5 years ago! First it started out as a little clear bump with fluid, and all of a sudden it spread all over my buttox and inner thighs, blood and puss would run from it! I was told it was Jock itch disease! That is also the symptoms of Jock itch infection! I wish you the best!