Hi, am so sorry your cat is poorly, sending positive vibes your way. Our dog Ruby has a thing for my sons dummys, on one occasion she managed to get one and chewed the rubber teat off, I didn't know this till I founf the plastic dummy in the garden minus it's teat. Anyway about a week later she went off her food, had loose stools and started wretching...low and behold she threw up the dummy teat, it was still whole and had expanded, we were so lucky as the vet sadi it could have been very serious for her so since then I had stopped my son from using dummys to make sure it never happens again so I think your cat could well be poorly because of this but I would have thought it would have effected it before now ??? Kepp us updated x