I have had ovarian cancer 35 years ago, and ever since have had bowels issue. These are now more troubling as I age...I am now 70. I had radiation treatments only. I have also had a perineoraphy ( spelled wrong) and the diarrhea since then has gotten worse. I get little to no warning of the need to poo and have taken to wearing diapers when I go out. In addition I now have a leakage problem. As an example, I was just sitting at my computer when I felt wet....got up and checked and liquid (brown) had just come out, staining panties and my shorts....I ve heard of collagenous colitis...could that be it?