Suggest Remedy For Painful Infected Wound On Knee

i have cut my knee 2 nights ago and there is green pus in it, i bathed it undiluted detol to clean it but im worried as now i have looked up the side effects of using too much detol,which is skin burning, ive been putting water onto cotton pads and putting this on my cut. how long should i continue to do this? its thobbing at the moment but i think thats because i have been touching it. what should i do. 20 years old, 130 pounds, 5ft 4inches,