Stomach bug & decreased milk production

I got a stomach bug with diarrhea and vomiting Saturday evening. Slept as much as possible that night & intentionally ate only bland food Sunday while drinking as much gingerale and water as I could. I still wound up dehydrated Sunday and so did my 4 month old baby. I spent my sick day Monday drinking water, nursing, and giving my son thawed milk to supplement. I have yet to get back to normal breastmilk production. How long will it take until everything gets back to normal?! I'm exhausted! I need some encouragement.