I put a blow off tube in my carboy as soon as I pitched my yeast, which I always do because I usually have a very aggressive fermentation. The problem came when I went to remove it, and this has never happened before, I started to pull it out and it sucked some of the water(~1/4 of a gallon) back through the tube and into my fermentor!!!
Did I just "F!!!" up my batch?
Thanks for the help everyone.