Prolet, Rimadyl, Carprofen tablets) and Meloxicam
(tradenames include Metacam) after surgery. These drugs need to be given with food. Do not give these drugs if your cat is refusing to eat.
Most cats that get spayed are not normally off their food for more than a day. You should contact your vet if your pet does not eat for more than 24 hours after surgery.
this isn't normal IMO to not eat for this long a period afterwards...