My mother was very ill this past week and given liquid morphine for pain. She started having scary dreams like she was covered by a black blanket and surrounded by dirt. After a day of this we stopped the morphine. Now after five days of not taking this drug she is having bad dreams again. This time she is surrounded by all kinds of animals and when she wakes up they are gone. Shouldn't the drug be out of her system by now? Other than removing the morphine, her medications are the same.