I think I'm subconsiously afraid of mirrors

Last night I had a dream. well it started out as a dream then I got scared, so I guess it was a nightmare.
a lot happened in my dream, but the scarriest part was when I looked myself dead in the mirror and screamed, "I'm not afraid of you" and my reflection started laughing and her eyes went completely black. I think im afraid of my reflection. I don't remember all the parts of the dream, or why anything happened--- next time I have a vivid one like this I promise to write it down and put it on here.