I had my first colonoscopy in February and was diagnosed with IBS, type d. I've had symptoms for quite a few years, but have a strong family history of colon cancer and crohn's on my mother's side. I am glad to have finally had the tests done....it was a relief. Now comes dealing with these horrible episodes that have attacked me it seems like forever. I was wondering how often do I need to have testing such as a colonoscopy, etc, with a positive family history? I have 3 aunts with colon ca....and one with crohn's.