Oh dear... I'm sure you obv know the worst thing that can happen is that you get overly dehydrated ... If you can't even keep water down maybe an IV drip is the thing to do here... you seem to have tried everything that I know to do. I feel v sorry for you... I wouldn't even wait. If you really can't keep even water down, I wouldn't wait, every hour that goes past without fluids is very bad. Good luck, so for the lack of help.