Ever since I can remember, I've had this terrible ugly mark on my left side. It's right under my ribs, and it's a dark brown/blackish color. I'm only 15, and whenever I mention it to my mom she just doesn't care and says I'm imagining things.
Is it just a really ugly birthmark or is something wrong? It doesn't hurt when I touch it or anything, it's just there. Thanks! Below is a picture, not very good though since it's actually darker.