I having been having tail bone pain for about 3 months. About 2 weeks ago I started having blood on toilet tissue when having a BM and also anal pain when going. Thought it was a hemorrhoid . Did at home treatments with little relief . Bleeding has stopped when going to BR. But the pressure and stinging sore feeling in the rectum has not. Went to Dr. Said I didn't have internal hemorrhoid and did not see anything external. I am scheduled for a colonoscopy in one week but I am so worried . What do you think this could possibly be