If you are like me you wait to have a problem until a holiday weekend...anyway if you run a fever or start vomiting or have uncontrolled diarrhea you know that you have to get medical attention before you become dehydrated. But otherwise: Coffee makes a mess out of my digestion. Good idea to avoid it. How about a day of clear liquids to give yourself a rest? You changed your meds around - who knows how long it takes to stabilize?