What would a hard bump, about the size of a dime, that has a little redness in the center of it and puss coming out of it, be? This is on a baby, in his groin , in the upper space between his penis and his leg? How would the baby have gotten it? And what should be done to treat it? The baby is able to indicate that it hurts when you change him (well, while wiping) thank you, in advance, for your time