Ive had about 8 cats. All of them get neutered and spayed. He'll be a little groggy for any where from a few hours to around a day or so, depending. The vets should already give him a cone to stop him licking at the stitches. He wont need pain meds, the vets will have already given him some ^_^ As for when you get him home, just do everything as normal. No need to worry. Just set him up where he usually sleeps and bob him on his bed until he comes round properly. Dont let him outside untill the stitches have healed. Literally just do everything as normal ^_^ so food and water as normal, but just hold back from keeping him running around or jumping about too much.
It's a perfectly normal things and they heal up really fast. Just don't let him out in a couple of days, and make sure he doesn't lick the "wound" - or whatever to call it - too much.
I've never heard of ANYONE giving pain meds to their cats after being neutered, so I don't think that would be a problem. Just relax and make sure that if something looks strange (stranger then when you picked him up from the vets) contact the vets again.
Don't feel too bad. Fortunently neutering in male cats is a very simple procedure. Even more so than in a dog.
He may be a bit sore after the anesthestics and meds ware off but it shouldn't be too bad. Just make sure to keep him quiet and keep him from jumping too much. Too much acitivty after the surgery might cause some swelling and that would make me more uncomfortable.
I have three male cats. One got neutered when he was already about 2 years old. The others got neutered before they turned a year old. It was really simple and they didn't seem to be in pain because the meds from the surgery still lingered for a while. The stitches did itch later though, so watch your kitty and make sure that he does not rip the stitches out. When the wound starts to heal, the stitches will mostly be pushed out by his body. Anything stitches over after the healing process may eventually fall out once the wound is completely dry/healed.
Other than that, just expect him to be the same old kitten that you had before he was neutered ^_^
I got my kitten fixed at 6 months, and the surgery is so simple that he didn't even need stitches. The vet told me to try and keep him from running and jumping too much and to make sure he wasn't licking or chewing that spot. The first thing they need is water, since the surgery and drugs and stuff make them very thirsty. Food they'll eat later if they want it.
But I mean, they don't even notice it I don't think. My kitten was his usual insane self within a day of bringing him home.
Unfortunately, if you can't get a collar, there's nothing else you can really do except keep an eye on him. Make sure he isn't licking or biting the area too much, and definitely keep an eye out for infections. I wouldn't worry too much about pain meds, my cat wasn't given any and he seemed to by fine (considering) and healed relatively quickly.
I'm not sure how long it took to fully heal, probably a few weeks. We took the collar off in only a day or two because it was really making him angry. I just kept an eye on him while he would clean himself to make sure he didn't excessively irritate the area.
I think we left some food out for him and he ate a bit of dry food after he came home, and began eating regularly within a couple of days. He took it like a champ, even though apparently he was an asshole to the vets and tried to bite them a lot, lol.
You can't do anything I'm afraid. If he's not wearing a collar he will lick himself it's his way to heal it. Most vets give them collars to wear, one of my cats got spayed and got dissolving stitches put in were the cat it allowed to lick the area without there being a problem, and the stitches eventually disappear from the saliva after a few weeks. Now seeing as your cat has no pain medication as you can't afford it. He will probably be in in pain he did just have an operation. Not being harsh or anything but when you have pets be prepared to have back up money or insurance. I've had so many pets from childhood all the way to my early adulthood now. If you're going to buy a pet you have to afford the cost of medication whether it being for castration or injuries. Also where I'm from the pain injection comes as a whole package with the neutering or spaying.
Oh make sure he has fresh water available at all times. Keep an eye on him, just comfort him basically. He's a kitten so he'll probably be seeking attention from you or he might not want to be touched.
Also I know how expensive vet's can be. Once one vet tried to rip me off, another left my cat to suffer so he could get money out of it. I later found out he had a 5 year ban stopping him from working with larger animals. Because he was being cruel to them. Take note not all vets are nice or looking out for the patient ie the clients pet.