I went tanning one day and when I got home I later took my clothes off to shower, I noticed in the mirror I had dark blue rings around my aereola's, one more darker than the other. They were swollen and have been sore. I'm not sure what this could be but it went away so I haven't brought it up to my doctor. I'd still ike to know what it was though. My breasts are still tender. But no blue circles? What could this mean?