Oh no, you poor thing!!
You definitely need to keep taking TINY sips of water - or dioralyte (sp?) would be even better, if you could manage it - to replace the lost liquids and salts in your system. Even if you only manage to swirl it in your mouth, it's a help. I had a really bad tummy a while back. 3 days of being unable to keep ANYTHING in my system
Little Man was feeding a fair amount when I got sick too & after 3 days of nothing staying in and him feeding off me, I nearly fainted with weakness. Medi will be fine, but be sure to watch for yourself, in particular dehydration.
Feel better & mind self.