Re: Hubby has question about pain treatment post surgery....
My FIL has recently had 1/2 his large bowel removed (his tumor was fairly small - it hadn't spread), I think this is done as a precaution, just to be on the safe side rather than risk it spreading. We don't need the amount of bowel we have, so tell him not to worry, his stoma will most likely be reversible and he will lead a normal life once he recovers.
FIL had an incision down his tummy and also has a morphine pump which he pressed when the pain got too bad. The pain he felt was around the skin wound rather than deep inide him. 6 weeks on and the pain from his scar is almost subsided now.
Try to keep him as active as possible, get plenty of rest (you too), freeze some meals so you can relax a little afterwards. It will take it out of you too, the stress and additional time out visiting.
Wishing you luck.