Is it common to give Facelift patient some narcotic/sleeping pill again when they have already woken up and surgery is over?

I was under anestesia 8.30-14.30. After I had been awake couple of hours(?) someone gave me some pill and I fell asleep again and woke up in the evening in the recovery suite. Many scary unanswered questions on my procedure. Weirdest is loss of most of nipple sensation... Why would they put me sleep again. They said I had less bruising than most patients and needed less help. The nightnurse was trying to make me eat sleeping pills many times and seemed annoyed when I did not want to.