Sounds like a fully-formed exaggeration. Vomiting once or twice a day is not spending your last days vomiting. More frequent vomiting? The supply could not possibly meet the demand. Especially if the patient stopped eating.
I wouldn't wish it on anyone.
It usually occurs due to intestinal blockage or fistulae.
If you were a child who was raped every night by your father, you could absolutely say with honesty that you spent your nights getting raped.
What matters is - does the event significantly affect the rest of your day? Not - is the event happening non-stop. If that were the case, you could vomit every hour and still not be able to make the claim, since there are periods of rest.