Why do i get diarrhea every morning? it's been going on for months

Diarrhea : There are many potential reasons for diarrhea in the mornings, ranging from infectious causes to irritable bowel syndrome. To sort it out requires a dr. visit and perhaps lab tests. However, before doing that, I would try increasing the amount of fiber in your diet and gradually starting a fiber supplement such as Metamucil each morning. If no better in 4-6 weeks, see your doctor. Good luck.