How do i get over an eating disorder..i'm having trouble getting myself to eat and even when i do i guess i don't eat enough. i lost 3 days in one day?

See a doctor: You should see a doctor, especially one who is well versed in nutrition and diet. You may have some underlying cause of your problem and tests may have to be run.

You need: Professional medical help. You are 18 years old - are your parent's involved in your treatment? Are you in fact getting treatment? It is important that you work with your physician. Psychiatric care is also important.