Three days ago, I had the unpleasant experience of finding a large growth/lump between my genitals and anus, inspection using a mirror showed a number of heads on the growth itself, I popped these heads and a bit of very dark/blackish blood came out with a little bit of white pus, similiar to a pimple.

I applied hydrogen peroxide, then neosporin and a pimple cream, put a sterile bandage over it, and basically took it easy sitting for the rest of the day. I changed/reapplied the dressing twice per day up till now.

The supposed carbuncle seems to have retreated beneath the skin now, heads are no longer visible and the amount outside the skin is relatively small, however, beneath the skin a approximately grape sized growth has appeared. It is not painful, and will not "pop" it really doesn't bother me physically, but I can't help but think it isn't normal.

I have always had very little acne, have not recently tried any new products in the area, or anything of that sort. I am a 20 yr old male, any suggestions? Will it likely clear up on its own? Or should I go into the doctor to have this very unpleasant area inspected? Thanks