Tmi alert!
It's been three solid (arf) days of not being able to stray too far from a loo. No other symptoms, just water out the bum syndrome 
Started over a week ago with a big pain in diaphragm /chest, had an ECG (fine), next day loose stools. Now progressed to hopeless: food straight through within half an hour. Yy silver lining but that's not the point.
Waiting for results of sample (that was fun catching that..).
Anybody else?