I have been having symptoms of diarrhea for at least a week at a time, really bad cramping, intolerance to most foods, constant pain and it also goes into constipation sometimes. This has been going on for three years. It all started from milk, then spicy foods, then acidic and citrus foods. All giving me diarrhea at least 3 times a week. I also have burning feeling in my large intestine in the lower part of my torso and also the same pain in my back that keeps me up at night. I am going to the gastro doctor tomorrow and they will be setting me up with a barium enema xray to look at the lower part of my large intestine. This has been interfering with my life and job and school and I just want answers.