Also, please listen to the vet and keep your chi restricted to as little exersize as possible during the two weeks after.
All the complications we see after spays come from the dog being too active after the surgery. Stitches will pop, infection can set in, healing will take much longer.
You might feel mean but you should really keep your chi in a crate most of the day, and when you take her out keep her on a leash...even in the house...it just takes her to take off running, jump, or twist a certain way to pop a stitch. I dont mean to scare you but almost all the complecations we see are because of that.
You might also need a "buster collar" (you know...those goofy plastic cones that dogs wear to keep them from licking a surgical site). Stitches can be itchy and she will probably want to lick her surgical site....a bustar collar also seems mean but trust me....keeping a goofy collar on your chi for two weeks is much nicer then letting them chew out their stitches and get an infection.
Wow I sound a tad preachy in this post. I really dont mean too....can u tell I give this speech a lot at work...lol! I just warn u because I saw a dog die because the owners thought it was mean to keep their dog in a crate for the time it was needed to allow a surgical site to heal....
WARNING...A TAD GRAPHIC
It was a lab and it bloated (much more serious surgery then a spay). Lab was only 4yrs. Went home after a couple days after surgyer healthy as can be. Two days later the dog was rushed in because it jumped up at the door and popped all of his stitches, spilling out his insides. The dog came in screaming, his intestines falling out. I had to help bring him in. It took all of me not to get emotional....it was so hard to see this dog in this condition. The owners decided to put him down because they couldnt afford another $2000+ surgery. When asked what happened they said the dog jumped at the door when company came over. The vet asked why the dog wasnt in a crate like we told her and she said because they thought it was cruel to keep his activity level restricted. Now their dog is dead. Again a spay is far less invasive and you wont have to worry about ur chi's insides falling out....but you will have to worry about stiches popping or being chewed out and it can result in infection or in some serious cases (depending on when it happens) another surgery.
Again, I only say this because I dont want you to think you are being cruel by keeping your chi in a crate. And again if you want to take your chi out keep a leash on her so you can keep her from running or jumping.
I also agree, you will be shocked how fast they bounce back. As good as they are feeling you still need to keep them quiet for the full two weeks.
Also please give the pain meds as directed...most of those meds have an anti-inflamitory in it to keep swelling and bruising down. Remember dogs naturally try to hide pain so even if they look like they are feeling well they still might be hurting. Also your chi will probably not want to eat until the next day. They will give u directions on feeding but probably not the day of surgery.
Also check the surgical site often...look for swelling and redness that looks like it is spreading. Also look for discharge from the site for all can be signs of infection.
Best of luck. BTW my chi was only 3lbs when she got spayed and she did fine. Its very scary but as long as you have a good vet who works with toy breeds a lot you shouldnt worry. Please let us know how the surgery goes and ifyou have any more questions!!