like pp suggested but not on a heating pad, try a magic bag

it's a grain filled mini pillow and you heat it up in your micro wave.
I think people have made their own using rice.
Good luck and keep us posted, sounds strange and almost like a blockage. Is he poopin' ok? And sounds like what K's mom said. I'd think it's worth another visit the the dr to ask about a possible infection/inflamation--unless that is what is seen by an xray and they've ruled it out.
A friend's dh got this, his stomach cramps were bad and his appetite gone or just less. It's like th body automatically stops wanting food in there.

hope he feels better soon.
xo
j

me:42, DH 44
FSH 26
DS: born by c-sec Apr15'03, 9lbs5oz 41wks gest. (after 4 years of ttc, starting in 1998)
DD born by c-sec Oct 13 2007, 8lbs13oz 39wk gest. (after just under 3 years of ttc)
~~DS was conceived naturally the cycle following a cancelled DE IVF, using my good friend's eggs. She was on the verge of hyperstimming.
~~DD's nat conception I attribute to using OPKs like a crazy nut, eating grapefruit daily and using preseed. also 5 cycles of TCM ending 2 cycles before that lucky cycle.
~~~~~~~~~~~~~~~~~~~~~~