If it's areal boil, it will last for many more than two days. It will grow, spread, turn red, be hot to the touch, very painful. GO TO DOC if this happens. Staph infection. In comparison, you're talking about pimples.
PLEASE GO TO THE DOCTER my dad is one he said that that could be a very serious infection and will kill you go to the docter and whatever you do DONT POP IT YOU WILL GET INFECTED AND DIE