Some dogs are a bit more sensitive to the spay surgery than others. You could ask for pain meds, i personally didnt but my dog was fine. Spaying a dog in heat from what i understand is a slightly more difficult procedure even though im not sure why. For now i would just wait it out and make sure she takes it really easy if shes bothered. Is cleo crate trained? Maybe some crate rest will help for a day. Sent from my DROIDX using Tapatalk