I sound like a cliche broken record when I repeat this recent roller-coaster ride. Things looked bleak for a while. After my visit to my doc and after the labs returned all OK results, I started to look for clues somewhere else.
Sometime few months before the surgery I was stressed out and I lost some of my trademarked realistic perception, and my doc suggested to take Prozac which should put me on the right track. Since one of my biggest worries about the surgery was the depression that many patients experience afterward, I decided to continue taking it until I know that I am out of the woods. That decision was actually suggested by my bariatric surgeon, who also warned me about serious possibility of depression. To make the long story short, after the lab results came in and showing nothing wrong, I decided to get off Prozac. It took couple of weeks, but the vail of energy loss and physical exhaustion had lifted. Just as before I could not stay awake, now I exercise, sleep only few hours and being rested rest of the day, etc. Another amazing thing happened - my suddenly increased appetite went back to the new 'normal' behavior where few bites are generally satisfying and more is not needed.
I finally joined and attended regularly scheduled class at the gym that combines cardio and strength exercises, my head is clear, body is willing, and life is wonderful.
On the negative side - I am still above 200lbs and my weight oscillates between 201-204, but now I know for sure that I am back on track and the forward trip will continue.