I am anerexic. i don.t knoe what to do. i cant aford the costly in treat ments.?

i am anemic. i see myself as fat and i hate my self every day. i only eat 300 calories a day and i.m 4'11" and i weiqh 82.6 pounds. i realize now tht i am severly under weiqht. but i can imaqine qoinn bac to my old lifestyle. what do i do?