Diarrhea is almost always a sign that the number of good bacteria in your gut is too low.
Take probiotics orally and also do Probiotics Enema .
Make home made yoghurt and use it.
Get a milk, empty 2 capsules of probiotics into milk, and keep it on temperature close to the temperature of human body.
Within 20 - 24h you will have a yoghurt, that contains million times more probiotics then capsules ...