I have been dizzy hot weak i have had a lot of diarrhea i don't know what's wrong..and i've stopped caffeine?

See your doc...: Chronic diarrhea can lead to dehydration causing dizziness or vertigo. Your sensation of feeling hot may indicate a fever suggesting inflammation or infection. Stopping caffeine was a good decision. May want to further restrict food intake by consuming only a brat diet (bananas, rice, applesauce, toast) to see if the diarrhea improves. Drink plenty of fluids including bouillon. Good luck!