Nyquil and Tylenol extra strength dangerous to my body?

A couple hours ago I took 2 Tylenol extra strength and just now I drank a few tablespoons (I filled the little cup that comes with the bottle) of Nyquil. Is this dangerous? I didn't know that both contained acetaminophen and now I'm scared. I don't do this regularly but is there still a potential threat to my body?