Follow your RO's advice. If you get dehydrated, you will be REALLY sick, really quickly. If there's some way of getting back for an I.V. "top-up", that would probably make you feel quite a bit better. I would be concerned about the lack of bowel movements, though. Have you mentioned that to your Doctors?

Good luck. You've stil got a little while before you start to feel better, but you're on your way!
Wayne