Three years out here as well. No stomach pain but I have the same issue with being tried and fatigued all the time. Best way to describe it is like having the tail end of the flu and having to go out and mow the lawn. I can do it but when it's done I'm completely exhausted. I have have many tests. B12, Iron , Ferriten, ect. Doctors are saying this could just be the new normal for me, but I have dicided not to accept that idea. Since the surgery I have been sleeping upright and just don't get as much sleep as I used to. I think this might be the problem so the next step for me is to figure out how to get more sleep.