I had a bump under my sack I bust it puss came out and then a lil sore came DAT kept being moist it dried up but still looked like puss was under the skin now it bust again what can this be
It sounds like a sebaceous cyst - an oil gland. They are like a big pimple.
If it is pus then it may be infected.
Keep the area clean and dry. If it continues, seek medical attention.