Bulga , 5 treatments ? Was it EBRT or some other type of radiation? The usual dose is 30 sessions . Rectal bleeding can be a common side effect . Usually just when you have a bowel movement though . I saw a GI Doctor , he looked at my last Colonoscopy and said it looked healthy , and recommended we do a test to scope Oesophagus and stomach - just to be sure .....but he said it is common and the small blood vessels get irritated . Mine seems to be variable . about 1-5 times a week I will get some blood passing in bowel movements . Im not too worried after talking to GI Dr . What he did pick up on is , that I have a fatty liver . he recommended me loosed 10-12 lbs and some natural supplements such as milt thistle and such . he will scan my liver for this as well next month . Keep my in the loop of your progress .... James - Vanc Island .