Why do i keep having cravings to eat dirt? do i have an eating disorder?

This is called Pica : In certain populations or cultures it is actually fairly common in children and women - especially in pregnancy. It may reflect a mineral deficiency and is only diagnosed if it lasts over a month. Since it can lead to poisoning, it is good to get effective behavioral control over it. Find a specialist behavioral therapist if possible or one who is willing to learn about this disorder.