Man, I wrote the book on butt pain after surgery. Some guys are doing jumping jacks the next day, and some guys (like me) are just darn near crippled for a while. Not sure why. Mine felt exactly like somebody had kicked me right in the anus as hard as they could. It lasted about
6 weeks. I started by leaning on one cheek, and then the other. I literally could not drive for a while because I could not sit "squarely." I had 2 different inflatable donuts, and they were pretty worthless. I found that the only thing that helped was the biggest, softest cushion I could find. And forget anything close to a hard chair.
However - we are all different. You may have zero butt pain and be doing hand springs the next day. In any event, I HIGHLY recommend having a big soft cushion available for the ride home from the hospital. I got really tired hanging from the little ceiling strap handle while my wife drove. Every little bump was brutal.
You can get office chairs today that will adjust in height, seat tilt, back tilt, and individual arm heights - and of course they all roll and spin. Getting a chair with multiple adjustments will allow you to change position often, or find the one position that is best for you. If the chair is a big issue for you, don't go cheap! Spend the bucks necessary to make you comfortable and happy!
The good news is - with any luck at all, a year from now this will all just be an unpleasant memory for you.
March 2006: PSA 2.5
Dec 2007: PSA taken for insurance application. I did not see the results until late Jan '08 - after I was rejected. Their lab said PSA 4.5. PSA again in Feb '08: 3.7.
March 2008: Biopsy. Gleason 7 (4+3) 12 cores taken. 5 on the left side were cancerous and the 6th was suspect.
May 5, 2008: Da Vinci robotic laparoscopy at GW Hospital, Washington DC.
Post op: Gleason 9 (4+5). 15% of prostate involved. Stage: pT3a. Negative margins. Lymph nodes and associated glands all appear to be cancer free.
July 2008: PSA at 7 weeks was undetectable.
August 2008: PSA at 14 weeks (3 months) was undetectable.
Nov 2008: PSA at 6 months was undetectable.