I am dehydrated and not thirsty.. what can i do?

I am entering the land of hardcore dehydration.. smelly pee, dry skin, constant aching in ny muscles and stomach but no matter what I do drinking water or gatorade or anything makes me feel sick. I'm only able to take down one coffee and maybe half a glass of anything throughout the day and I'm starting to feel really sick. I have no insurance so I can't see a Dr unless I'm on the brink of death. Any suggestions or advice?