Suggest Treatment For Bump And Swelling On Nipple After Injury

I am a 19 year old male. I injured my right nipple during a personal play piercing session (I used a slightly thick pin to pierce through both ends of my nipple). For one or two days the top of my nipple felt "bumpy" but it soon went away. However, it has been 7 weeks and I have been seeing a few blisters around the nipple and the areola, as well as some tiny discolored parts on the bottom of the areola (looks a little engorged). I have self-checked various times and found no suspicious or serious lumps. Ever since that injury I had been looking at my nipple and caring for it by simply washing it when it feels a little irritated (whenever I lean to the side with the affected nipple I sometimes feel a little mild swelling "sting" but then it feels fine again). I have tried using Neosporin but it didn't seem to do much, and now I am trying to see if saline (hot water + salt) will help. Should I be worried? Is this just bacterial infection? Please help, thanks.