So all of the sudden today I have a black/purple'ish perfect circle about the size of a pencil eraser on the heel of my foot. I don't know what it is, and I am scared! I do know yesterday I ran barefoot down the street looking for my dogs who got out of the house. But I can't recall hurting myself. But I've never had this on my foot before. I haven't been able to focus today. Not even at church! I just read about melanoma. I am so scared it is cancer :( I do plan on going to the doctor if it doesn't go away, but it just appeared today. Anyone have any idea??
***Here is a picture**** http://tinypic.com/view.php?pic=302xg6c&s=6