I felt the need to reply as it was only 4 months for me. I feel as though I had the same experience, but not to worry, they seem to work themselves out. My post op problem was a huge spike in temp about 1 month out (103.7) Stomach problems and bathroom adventures seemed to takeover my life. I became adept at getting out of boring conversation by blaming nature calls. They still come without warning and are quite violent.
Your stamina will return. Mine started at 0 (My wife accused the surgeon of removing my cute ass during the procedure ) and my legs were reduced to sticks. I started going to the Y at weird hours, so no one was around, and started on the treadmill. At first I was toast after 10 minutes, but with regular visits (4 times a week)I can now do 30 minutes on the eliptical machine and do a rotation on the machines.(very little weight mind you)
Appetite is coming back BIG time, though, with workouts. So I have to watch myself or I will explode. Still no ass though.
Please keep up the good work and focus on the future. If you know it will get better, it will. My minister came over for a visit a while ago and said "Did you ever think you would recover this good when you were in the hospital?" My answer was "Hell YES! That was the plan all along!" I am going to apologise someday for my arrogance. And my misspellings.
Enjoy the progress and push it when you can. Always find humor in everyday happenings, as you already have, and never,NEVER give in to the naysayers who try to pull you back.