What to do if I have been pooping almost pure liquid for about 6 days now after having the stomach flu. Help?

Diarrhea. You might still be suffering from the same virus. Some virus will last for 1 to 2 weeks. Make sure that you are well hydrated. Avoid too much juice due to sugar may make your diarrhea worst. Your stomach might still be recovering . You can help by taking some probiotics , or yogurt with probiotics in it. Avoid food that are spicy , oily and fried.