I went thru similiar problem with bleeding and clots 18 months after radiation...Went into hospital here in Baltimore area, where the put in cathater that would kept a constant flushing of the bladder...While this was going on, they had me going to hyperbaric treatments twice a day...It took a while but IT WORKED !!!!...There is alot of info on the internet about this...If you are close a large hospital, they should have this equip....If you want more on this . I would be glad to help..BEST WISHES.....