Hello Mohammad,   I'm sorry you are in distress. While I wish I could give you a diagnosis, that's just one thing the internet can't help me do for you.   Have you been diagnosed with IBD in the past after having a colonoscopy? If not, then a colonoscopy may well be in order. It is really the only fool-proof way to diagnose either Crohn's or Colitis. Stool and blood tests and CT scans are useful but cannot definitively diagnose IBD. Typical symptoms of IBD tend to be chronic diarrhea with blood in the stool, abdominal pain not associated with eating, low- to mid-grade fever, joint aches, eczema, etc.   You may have IBS - irritable bowel syndrome - which causes pain such as you have described and the pain tends to be associated with eating. You may want to read my past Shareposts (on the main IBD site page) where I discuss diet and keepind a food diary to help you figure out if certain foods are possibly causing your symptoms. Many people find that dairy foods, red meat, fast foods, preservatives, prepared foods, soda, coffee, wheat, and sugary foods cause gut-related symptoms.   I suggest trying a food diary for 2 weeks and see if you can find any relationship between what you are eating and when your symptoms are present and/or worse or better.   Good luck, Elizabeth