Goddess?! Thanks, but just an experienced poucher with some nursing experience just wanting to help.
John, tired? You bet! Most people underestimate the huge amount of resources it takes to recover and heal from this surgery. If you were sick before surgery, that sets you back even farther. Add to that, the lack of sleep and less than perfect nutrition, and you have fatigue with a capital F!
There is no rushing the climb back to health. No vitamin, potion, supplement, etc. that will speed things along. Of course, if you are anemic or something like that, it should be treated. Otherwise, just be kind to yourself and rest when needed.
It took me a full year to regain my stamina. I was running on half empty all that time. I pushed myself to do what was neccessary and loafed the rest of the time.