I had slight bleeding 140 post radiation. Most days it was a smear on my feces on my second bowel movement of the day. I did have two days where the toilet turned pick from the blood but as someone who donated blood every two months for years as disconcerting as it was it was for me a drop in the bucket. I did have the SpaceOar gel inserted before the five proton radiation treatment. It stopped thirty days ago. I cut back on my blood thinners and that seems to have worked at stopping the bleeding. What the future holds who knows as you said your husband started two years after his radiation.