I had a dream, i knew i was dreaming, i knew it wasn't real, but i saw this:

http://server5.pictiger.com/img/1162...g/dreamman.jpg

Nothing happened, he just stood there and looked at me, until i finally said "Who are you?" He wispered something, and then my sister woke me up, i was sweating. But in the dream, when i woke up, he killed me... how nice

What's going on? should i get help?