How does Macbeth feel when he covers up killing king duncan?

When he covers up killing King Duncan, Macbeth is filled with guilt, remorse, and paranoia. He is unable to sleep, and when he does, he is plagued by nightmares and visions of the ghost of Duncan. He becomes increasingly withdrawn and isolated, and his relationships with his wife, Lady Macbeth, and his subjects suffer as a result. Macbeth's mental and emotional state deteriorates rapidly as he struggles to cope with the weight of his crime and the consequences of his actions.