[header] How to naturally treat diarrhea during pregnancy [title] Eat a brat diet to firm up your stool. [step] Brat stands for banana, rice, apple, and toast. These foods are effective in treating diarrhea and making your stool firm. 
[substeps] The rice should be brown rice and the toast should come from whole wheat bread. The fiber found in these foods absorbs water and makes the stool " bulkier " and solid.