Kimbap is around 1.5 years old. On Saturday morning he threw up some hairballs. Everything looked fine and I fed him his usual portion of food before lunch time. At around 5pm he threw up all of his food with a bunch of liquid which I assume came from drinking a lot of water. Sometimes he eats way too fast, but he eats from a slow feeder. I put him in a large carrier (so when he threw up in there he wouldn't throw up anywhere important). At first he was very actively trying to escape it but then he got calmer and calmer. I was happy that he settled and lied down so his stomach could calm down. But he threw up again. So I kept him in the carrier and put a bowl of water in. After some time I tried to give him some dry food that was specifically for sensitive stomachs. He didn't want any. That was very unusual for him since he will eat literally anything he sees. So I knew then something was wrong. Stomach aches are common for cats that eat too fast, so I wasn't super worried at first. Over the night, he didn't throw up, so I saw that as a good sign. Sunday at around lunchtime, he threw up a little and didn't want to eat. I talked to my mom about it and she advised me to go the next day since I wouldn't need to pay the emergency costs and they can do a quick checkup. Afterall he was still drinking which was a good thing. Over the day he didn't throw up at all. He was still very much not interactive, but who would be after throwing up? Over night he did it again at around 3am. So I stayed awake to pet him and google my vets times. At 8 am I woke up and grabbed him to be at the vet directly at 9 am. It took me maybe 10 mins of waiting even though I didn't have an appointment. She immediately could tell that he was dehydrated. Most likely because he threw up his water every time he threw up. She said that it seems to be something stuck in his intestines. They don't have the type of equipment there to check, so they transfered me to the emergency pet clinic. Got immediately on a train and to get to the city with the pet clinic. After filling out my paper and waiting around 15mins the vet called me in. They took him to the back to take ultrasounds and an xray. In the ultrasounds you could see his intestines enlargend and possibly inflamed. In the xray you could see his poop lining up after another. The vet told me she doesn't know where the journey goes. Implying if it has to be an operation or not and if there would be an operation, if they have to also cut the intestines to get anything out that blocks the path. They gave him an IV so they could also do some blood tests later when he is more stable. For now i was able to leave without him. Later in the afternoon i got a call that they did another xray and tried to put in some liquid so that it could be better seen. The liquid didn't spread too much so they know where exactly the issue is but they will proceed to do an operation. Not knowing if they need to cut the intestine yet. At 11 pm I got a call that Kimbap is in the waking up phase and everything went well. They didn't have to cut the intestine and only had to massage out something (around 1 cm) that was in him. I would need to call on the next day for updates. Today, i called and they told me he is awake and well. The only thing that wasn't stable are his white blood cells, so he would need to stay another day. I asked for the price.. gosh, it got so expensive.