My Husband Has Prostrate Cancer And Bone Cancer. He Is

My husband has prostrate cancer and bone cancer. He is on long acting morphine and short acting morphine. they put him on 10mg of methandone. He had a scab on his knee and it was bleeding. On his right forearm there was a little pinhole. It started bleeding. We went through 2 bandadies which were soaked in blood in minutes. I put the septic pencil on it and it stopped. Is the bleeding caused by the methadone. He is taking 10 mgs a day.