Should that happen to me I'd just check in at a cheap airbnb for a week until feeling better, possibly with a friend taking care of me while i complain about being sick
I went from feeling fine to could-not-walk-three-steps-without-vomiting in the course of an hour. Could probably not have seen it coming and booked an airbnb in time.
Here is a serious pro-tip, take two shots of apple cider vinegar and 30-40 minutes later you'll be right as rain.