The long recovery can be discouraging. Some of the medications can contribute to that feeling as well (I'm not familiar with the one you mentioned). Cleaning the kitchen can be exhausting. So can doing laundry, depending upon your setup. I know you won't die if those tasks aren't done, but there can be other undesirable consequences. Smile. I know I feel better if my kitchen sink is clean. I hope you feel better today for having gotten those tasks accomplished. I know I would. You sound like you're doing well to me.
Also, you're liable to be feeling much differently (to the better) by August 18.
Jean
LTKR (Stryker Triathlon): 21 April 2015
Right Knee Arthroscopy: 25 July 2006
Left Knee Arthroscopy: 10 February 2005