Because you added the lager yeast it could take off right away and make some alcohol which helps suppress some of the nasties. I would suspect you might see those nasties start to take hold later and you will see the flows come through down the line and especially if you age a few bottles? Drink it fresh and you might never know?
My candle burns at both ends; it will not last the night; but ah, my foes and oh, my friends it gives a lovely light. Edna st. Vincent