By the sound of it, you might be over fifty, apologies of course if you're not.
A base line colonoscopy is considered by many to be a sensible thing to have done at around that age especially if you carry medical insurance. That will also cover the possibility of any early diverticulosis which can be remedied with a change of diet. At the same time as you were having a colonoscopy, you could have an endoscopy and check for Helicobacter Pylori.