It's called Krausen, it is normal.....Now relax, take a deep breath and step away from the fermeter for a week...The beer is fine, and the yeasts know what they're doing, they don't need you hovering over and worrying about them....They've been making beer for several thousands of years...
You're beer is fine, you aren't...you have "n00bitus."
GO read the stickies in the beginner forum, especially the stone cold locked one...if you had read that first you never would have worried...And if you haven't yet, read
howtobrew.com
Welcome to HBT!