It's probably the carbon dioxide they put in your stomach to blow it up so they have room to move. For the nausea have you tried Isopure? It's gentler than a protein shake.
I am 2weeks out after surgery and get up early to walk my dogs. I am having a hard time with my energy level first thing in the morning but won't have a choice when I go back to work in a week. Any ideas for getting some pep before I go?