I really like the site below! I don't think it is really scientifically proven, lol...but for fun and interest, I have often looked up dreams/nightmares here.
http://www.dreammoods.com/dreamdictionary/n.htm
I used to have terrible nightmares when I was going through the height of my anxiety issues. I still have occasional trouble, and they can really influence your mood!
One of my most recent fortune cookie fortunes read:
"Your Most Memorable Dream Will Come True."
...and I was like, "Hay-ell NO!!" (I take things quite literally, lol!)
Sweet dreams to all of us tonight! :)
S.C.