A dream where there is blood suggests that you are putting focus on an emotional wound or you are angry or fearful of some aspect of your life. Alternatively, the dream can imply that you need to realize your strength in some part of your waking life.
Blood shed in a dream can suggest that you are being self-destructive in some area of your life. If you are bleeding and someone is taking care of you then it implies that you need to embrace help in times of pain or struggle.