Do I Have Nail Fungus? I have a dark line?

 Do I Have Nail Fungus? I have a dark line?

I have noticed that i have a black line on my finger nail, since i bite my nails i thought it was a crack in the nail, but some one told me that it could be a fungus, and now im shocked. I have never had problems with my nails. I have never put fake nails on, and i wash my hands often. I have put a link of my nail at the bottom. if any of you people have had this problem please tell me what it was, and how you can cure it

http://tinypic.com/view.php?pic=2aflym0&…

(if its not a link copy & paste to the search bar)

Thank you

Do I Have Nail Fungus? I have a dark line?

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