I didn't really have gas pain either, but I did experience difficulty waking up. In fact I am now four days post-op and I can still feel the side effects of the anesthesia. I have dry mouth, nausea, itching, random dizziness, and blurry vision. I hope it clears up pretty soon.
What I don't have is hunger to any extent. I smell food and don't have a desire to eat anything, obviously that may change in time.
I am able to drink two Protein shakes a day, followed by Water throughout the day.
I have been walking, as long as the weather permits.
It is amazing how much better I felt the day after surgery.