Hi there, i hope someone can help because i feel worse than i have ever felt in my life after having my lovely cat harvey put to sleep on the early hours of sunday morning. He developed saddle thrombosis. He started to breath fast earlier on in the week, on the wedneday night, i monitered him, he slept with me and in the morning he was fine, eating him food, running about, i still took him to vet on the morning to double check. He gave him a thorough check, everything was fine, and then he checked his heart and he said it was beating all over the place. I organised to take him back in on the monday to have an ECG. But saturday night came and he started breathing fast again, i sat with him and stroked him, he was purring, but breathing very fast, he seemed restless, that is when i called emergency vet, i was waiting for my lift to the vets which took around 15 minutes, then he started panting and foaming from the mouth a little, the purring turned into more of a rattle. We got to vets and he said his legs had stopped working, they were cold, i was in bits, he said he could try surgery, but by this time he was crying and was clearly distressed. I opted to take him from the pain and put him to sleep. Oh god it was the worst thing ever. I keep blaming myself now, he had a irregular heartbeat when he was little this was after he broke his leg, but vets wasnt concerned at the time. I havent had the best 3 years anyway after splitting with ex, i blame myself for not following up on that irregular heartbeat. Could i have given him aspirin to thin his blood. I feel so bad. He obviously had heart disease, could medication have fixed it or just prolonged his life by months? I am just glad i was there with him through all the pain. If it happened when i was out, god it doesnt bear thinking about. Any feedback would be good. Thanks