Same here - no pain at all (and no gain so far!) right from waking up. No nausea, vomiting, constipation, diarrhea.. even the incisions didn't do much more than itch - I was moving around fine, and went home the next day.
I'm 5 weeks out, but it's working. I asked my surgeon the same question as you (is this normail?) - he just said it was the luck of the draw. Dietician said the same thing. No one really knows why some people have a hard time, and others don't. Congrats on the surgery and the pain-free thing so far! My biggest headache at the moment is making sure I don't eat anything after 9pm (my old bad habit). Other than that - it's been a lot easier than I thought. Good luck on your journey!