edfu, you said...
Maybe I am sitting too much
Are you really "sitting"? Maybe that's the problem. Sitting a lot at first is not a good idea. "
Reclining" is good, but sitting not so much. Being vertical makes things swell up and sitting on swollen things makes them hurt. You want to walk a lot -- good exercise and keeps the blood flowing -- and while you are not walking you want to elevate your package to let the swelling go down. Laying down is fine but it's kind of boring. Sitting in your recliner with your feet up gets you more or less horizontal and doesn't put pressure on the surgical area.