I was knocked out too. I didn't feel any pain during the procedure itself. It wasn't until a few hours afterwards that I started feeling pain (though that numbness in the lips is always uncomfortable to me). Even then it wasn't bad and I was keeping it under control with ibuprofen and the Vicodin. This morning it was pretty bad but still manageable; most of today it's been aching, even with the painkillers, but not terrible.
All in all I'd have to say it hasn't been as bad as I was expecting.