Stay away from the dairy during this time...my two sons had yogurt (chocolate and strawberry) and a friend of ours had whipped cream on her crepes tonight.  All three had to run for the bathroom soon after.  Something is spoiling the dairy tonight.  My other son only had a cup of non-dairy toppings and my wife had strawberry crepes with powdered sugar...they are both fine.  My boys were able to flush it out and are fine now but our friend is still in bed..probably for the rest of the night.  What a way to end her last night of her trip.