You have had an ultrasound and MRI. Those 2 tests are performed to rule out tumors. Your were perfect your blood work was perfect. For those rare few who had CC early on and it wasn't caught it was most likely because a GP didn't order ANY tests because of age. It sounds like your ordered almost every medical test available besides colonoscopy and EGD. You are prime age for IBS. Please do not be this way. I was in your exact shoes a couple months ago. I was an wreck over CC. I'm much older than you (27) and I did not have it! Please talk to your GP about your anxiety, and hurry.