A week ago I racked my beer into a secondary after fermenting in the primary for two weeks. The top of the beer began to show small signs of bubbles. I thought nothing of this until this morning when I noticed that there were plenty more. It looks like the top of the beer in my secondary is forming a bit of foam. I am certain that there is no air getting into the secondary. Is this a bad sign? Is this normal? Is it still fermenting? Is this CO2? Or does this mean my beer is going to be awesome?