You should go to the feed store and get Corid, Amprol or AmpoMed and treat for coccidiosis ASAP.
20% powder dose is 1.5 teaspoons per gallon for 5 days, then 1/3 teaspoon for 1-2 weeks.
9.6% liquid dose is 2 teaspoons per gallon for 5 days, then 1/2 teaspoon for 1-2 weeks.
Make fresh daily...