i stress over my cat's health too. my beloved cat of 8 years died in jan 2014 and it was devastating to me. i feel like im constantly worried something is wrong with the cat i have now. im always feeling his body to see if he losing weight (he has long fur so its hard to tell by just looking). that's what happend to my old cat, he lost a lot of weight and had kidney failure. i understand your anxieties around your cat..