What monitoring a sensitive stomach actually means at home
When a vet asks you to monitor a cat with a sensitive stomach, they are not asking you to watch her anxiously after every meal. They are asking for a record: what went in, what came out, and how she behaved in between, gathered steadily enough that a pattern can emerge. A single loose stool after a new treat means little on its own. The same loose stool three times in a week, always a few hours after the same food, tells a clinic something it can act on. Your job at home is to collect that sequence honestly, without changing five things at once and muddying what the record shows.
Build the daily log around meals and the litter tray
Keep the log simple enough that you will actually maintain it on busy days. For each day, note the exact food and amount served at each meal, whether she finished it, any treats or scraps she picked up, roughly how much water disappeared from the bowl, and what you found when you scooped the tray — formed, soft, or watery, and whether there was vomiting and when. Write the time beside anything unusual. A phone photo of the tray before scooping sounds unglamorous, but it settles arguments about consistency far better than trying to describe shades and textures from memory a week later at the clinic.
Keep everything else steady while you observe
Monitoring only works if the background stays still. During the observation period, resist rotating proteins, swapping brands to use up a sale bag, or letting family members hand out extra treats — each change restarts the clock on what the log can prove. Feed at consistent times, keep fresh water in the same place, and note anything genuinely unavoidable, like a stolen bite of another pet's dinner, in the log rather than treating the day as ruined. If your vet suggested one specific change, make only that change and give it the full window they described before judging it, because feline stomachs often settle gradually rather than overnight.
Patterns in the log that are worth flagging
Read your own log once a week with fresh eyes. Look for timing links — symptoms that reliably follow one food, one treat, or meals served too close together. Note appetite direction: a cat who still races to the bowl despite soft stools is a different picture from one who has started leaving food and hiding afterward. Track weight by feel as well, running your hands over her ribs and spine during normal stroking, and write down whether her outline seems to be changing. These are observations to hand over, not conclusions to draw yourself; the value is in the sequence, honestly recorded.
When this cat needs the vet sooner than the next checkup
Do not wait for a scheduled review if she stops eating altogether, vomits repeatedly in a short span, produces watery stool that does not settle, seems lethargic or hides away from her usual spots, or shows signs of dehydration such as dry gums and low energy. Blood in vomit or stool, or a cat who cannot keep water down, deserves a same-day call. Between visits, storing the log, her food details, and past visit notes together in her Pet Passport on KinsLe keeps the whole stomach history in one portable packet your vet can read in minutes.