Little bump in pubic hair. looked like pimple, tried to squeeze, puss and blood came out. bruised after, still rather big. unsure what it is?15.virgin

Skin abscess: This sounds like exactly what you say, a pimple. More precisely, a small skin abscess, perhaps starting in a hair follicle (i.e. folliculitis). Due to common skin bacteria, no different than on your shoulder, back, or anywhere else -- not special just because it's in the pubic area. Leave it alone, no more squeezing. See a doctor if it doesn't clear up soon, or if any spreading redness or fever.