I have a question

Good morning everyone. My husband finished 30 rounds of radiation on September 2nd and his 12 rounds of chemo on November 12th. For the last week and a half the first bowel movement in the morning is real dark blood. The rest of the day is fine. Also when he blows his nose it has dark blood in it. We thought these after effects could be from the radiation which damn near killed him. We called the doctor to express our concerns yesterday and they had him come right in for blood work. His counts were down from a week and a half ago and he said that there is internal bleeding. He called the internist while we were there and he told us to go over to his office immediately. After the internist did a rectal exam he said there is definitely internal bleeding and we need to find out where it is coming from. He is leaning toward either a bleeding ulcer or damaged rectum from radiation. We are going into the hospital this morning and he will have an endoscopy and a sigmoidoscopy. My question is has anyone here ever had the same symptoms after treatments were complete? Thanks for any input. I am trying to put my mind at ease.