I saw one about two week ago! He didn't seem to concerned about it to be honest! He just told me to eat more fibre, and to take these metronidazole for a week incase of bacterial infection, but doesn't think that a colonoscopy or any thing else is nessary! But I've now been off the tables for a week
And nothing has changed!
It is time to see a gastroenterologist. There are many things that can cause chronic diarrhea. Anxiety, infection, medications, irritible bowel, autoimmune diseases like chron's and celiac. Tests are the only way to know for sure.