Are you drinking enough? remember because we don't absorb water from food like we use to that we can dehydrate easier. I've had 2 stomach bugs since my bypass, I used dioralyte. It really helps. Nothing helps the pain but keeping hydrated is the most important thing and if in doubt ring you providers emergency line and if they have't got one got to a and e if you feel really bad. I know most people wouldn't be keen at that idea but we really need to be careful when it comes to this sort of thing, not many, even doctors understand that we don't hydrate the same way we use too, especially in the beginning.