If you've got bubbles in your airlock, you should be okay. Once the yeast comes to life it'll do the work for you. It probably would have been better to wait another week to rack, but it should be alright. Don't worry about the yeastcake, there's always some residue left behind. It might not be as heavily fermented a beer as you'd been anticipating but it'll still be beer. Taste it before you carbonate, though, because you might want to adjust the carbonation to compliment the flavor.