Need Actual Reports of Initial Radiation Side Effects

My husband was diagnosed with prostate cancer this week--PSA 3, Gleason 3 after a 14 sample biopsy. He is 77 and in decent health otherwise, no symptoms that can be traced to prostate cancer. I should add that a prostate MRI in February found nothing but a nodule was felt in October, hence the biopsy. He is scheduled for a PET scan in a few weeks and then likely will have radiation for up to 9 weeks, five days a week. I know that things have advanced in the 25 years since my father passed away from prostate cancer but I hate to see him have to contend with new urinary issues. He had a TURP seven years ago and things in that area improved. Can I hear of some reports from at least this part of treatment? He thinks things will be fine but I have seen the other side of this and must keep my thoughts to myself.