I Had A Stomach Bug-threw Up And Diarrhea--I Dehydrated And

I had a stomach bug-threw up and diarrhea--I dehydrated and both. of my kidneys have been hurting. This morning when I was able to urinate , the odor is horrible, and the color of the urine is dark- Drinking water and Powerade my urine was turning into dark yellow now it is dark again......what should I drink ....do...was bad enough I needed to go to ER but due to finances I can not