So a while back I noticed and irritated red dot under and to the left of my nipple. Today at around 10 I looked at it again and it was dark purple and shiny with a little bit of white. I squeezed on it and some yellowish pus came out. After that just a lot of blood. It was swollen and it looked like it had skin peeling back from around the edge of the redness around the purple. There was also a small puncture on one side. I looked at it just now and it's not swollen anymore but there is another puncture on the other side and its still supper purple. A small amount of pus came out again, and I mean a VERY small amount but its now sore but still shiny and purple. (Obviously it's sore from me messing with it.) It hasn't been sore before now. In fact I wouldn't have noticed it if I hadn't moved just right in the shower. Could it be a spider bite??