To dream of a cut indicates that you are being belittled and undermined. Your dream may also possess sexual connotations as a cut may also relate to the feminine sexuality and feminine attitudes toward sex.
To dream of having a cut on your leg suggests imbalance and lack of strength in standing up and defending yourself from your adversaries.
To dream that you are cutting yourself refers to an overwhelming problem and mayhem affecting you in real life. You are attempting to cut yourself from the horrendous pain you are going through.