infected ear piercing with lump?

so i have been stretching my ears now for the past couple months and i recently went from an 8g to a 6g. My left ear, however, didnt take the stretch as well. it has been weeping and itching for the past two weeks, at first the liquid was green now it is yellow and it doesnt weep as often as before. although, in the last couple days i have developed something that is quit bothersome... i have a rather large lump in my ear next to the fistula.. it doesnt hurt, but when squeezed, it pushes more of the substance out. what should i do? i dont want to downsize at all.. i've been taking it out, cleaning it with dial and hydrogen peroxide [i know it isnt good cause it dries it out but nothing else seems to do the job] after i clean it, i put some neosporin on it and pop the plug back in [which are metal] any other suggestions? besides sss..