i have a boil inside my buttocks, it burst yesterday in the early am. it has stop draining blood. i am keeping a sterile gaul on it, along with neosporin and sometimes bactriban. its a bit painful but not as painful as it was before bursting, it burns when urine touches it. ive been cleaning it after ever trip to the bathroom. i am noticing a little bit of yellow staining on the gaul when i remove it, i am assuming that its puss. is that normal, what are signs of infection and how long does it take to heal?