Everything S&L said above…. I even bought a very small bag of alfalfa hay to try to encourage eating as she wasn’t eating much so I wasn’t worried about the added calories.
I ended up needing to force feed critical care as she did not want to eat anything – which was a pain in the butt as the vet said she had to take her pain killer / anti inflammatory mix medication with food in her stomach, but she was in pain and didn’t want to eat, but she needed to eat to get the pain meds…. *SIGH* lol
Trust me when I say that no mater how much you prepare yourself for the fact that she wont want to eat after, you are still going to freak when it happens. I sat beside her for hours just waving a bit of hay / Kale until she would get mad enough that she ripped it out of my hands and would nibble.
** Some vets will keep them until they see them poop and eat something. As your vet seems to be more advanced they may offer this.
I ended up timing her spay so that I took the Thursday and Friday off work and then had the weekend…. Her appetite actually got better once she was done her 3rd day of paid meds as I think they were making her feel a bit gloopy.
The second hardest part was keeping her confined in her cage for over a week as she was feeling better, but the vet was worried she could still tear something by running around too much… they told me 100% cage confinement for 10 days… I started letting her have an hour of limited roaming time – where I can watch her like a hawk – on day 7.
Not that I’m telling you to ignore your vets instructions… but your situation might be different.
Good Luck! It is for the best for her 