Hi, I had some similar problems too, also had colonoscopy  and mine turned out to be irritable bowel mainly due to food intolerance, my husband however, who never gets sick had some mild symptoms which turned out  to be stage 4 oesophagus cancer with mets to his liver, never in a million years thought that would happen! Understandable to be worried sick,  I was too, in my case it wasn't serious, have you had any allergies in the past? A lot of us with irritable bowel also have allergies and auto immune problems and the symptoms can be awful but not necessarily cancer, hope it's the same for u and they sort it out soon, the worry drives u crazy!