Hopefully, your rectal bleeding will partially resolve itself. A year after my imrt I had a colonscopy which broke my radiation proctitis
open. My pants were soaked when I got out of the car after a 70 mile trip. My wife wanted to drive me to ER but I declined since I would have laughed at an internist trying to place a bandaid on the source of the bleeding. It decreased over the weekend and my RO recommended hyperbaric oxygen therapy but I declined due to the distance involved and the time for the therapy. If the truth be known I was a skeptic. A year later I had another colonscopy due to a questionable polyp found on the previous one. The gastroenterologist offered to cauterize the problem but I declined. This is probably the argon or apc treatment discussed.
looking at the report and slides the proctitis was too widespread to be treated; just my opinion.
Anyway, the bleeding is manageable and decreasing.
Good luck and don't freak out.