3+ weeks in hospital and just released

If you can drink water/Gatorade etc. and keep it down, keep doing that.  Do not get dehydrated, it will make things much worse.  An ER visit may be good to get an IV for liquids and electrolytes.  I'm coming off a hospital stay myself and I can empathize with you.  Keep hydrating, get an IV if need be.  I hope you feel well soon.

Wow - you went through a lot and are really tough.  Drink the Pedialyte as much as possible.  If you feel really dry going to the ER for an IV could help, but it’s probably one of the last places you want to be.  Try some salty pretzels- the salt will help you retain fluids.

You need to eat, as well as drink fluids. If you are feeling weak, dizzy, disoriented, shaky, have headaches, or are lethargic, you need to eat proper food. Try something high protein but easy for your depleted system to digest. Try soft boiled egg, or toast with organic nut butter (peanut butter, almond butter), or make tuna salad on toast, topped with melted cheese. Add extra salt on your food for now.

You can hydrate with fresh fruit, too. Have an orange, or peach, or watermelon. Make smoothies using fruits or vegetables with soy milk or almond milk, or coconut water. Just stay away from pineapple for now, and anything with raw skin or raw peel. Good luck.