Worried about bowel cancer

I went to see GP after having different blood tests done, I have fibromyalgia but I was feeling more tired than usual, falling asleep a lot. The doctor said I was very anemic so she wasn't surprised I felt so tired. She asked me if I was bleeding from anywhere and I told her yes, my bottom. I have suffered on and off with piles for years so I wasn't particularly worried. Doctor examined me and said she was referring me for an urgent colonoscopy as she felt a lump. Before leaving she asked if I had any questions, now I just keep thinking by her language she thinks I've definitely got bowel cancer.