You were injured by treasure hoarders and left for dead...left unconscious with an arrow in your side. One of the Knights and Kaeya were on patrol near Wolvendom (I warn you now... I can't spell that well) When they saw you laying there they dressed your wounds and took you to Barbra...her healing was enough to stop the bleeding but, you were still unconscious. When you woke up, he was standing over you Kaeya: "How are you feeling?... You were left outside the city near Wolvendom..."