Believe it or not, but I think your beer is fine. I get those pellicles from time to time and its never been bad. Look closely at it and see if it's just a thin film over the top of the beer that's bunched up. It may have bubbles in it from CO2 or yeast coming up from below. Smell it, and if it smells fine, take a sample and taste it.
If it has furries on top or streamers running down into the carboy, dump it. Otherwise you might as well sample it and see what it tastes like. It won't kill you.