I'm a recovering anorexic/Bulimic but i'm scared im going back to my old ways, what can i do?

I'm a recovering anorexic/bulimic and have been in several eating disorder units all over the country since september and my cahmz worker said i was the illest patient she'd ever seen. I was really ill but ive managed to overcome it but im slipping back to my old ways...im getting discharged soon n im scared ill go back to the way i was before when i neva used to eat anything for weeks on end and i was also 5 and a a half stone and i ended up in hospital because of it. im scared to talk to anyone because im afraid they might keep me in the eating disorder unit that i'm in. i ws nasty and horrible when i was ill and i dnt want to go back but i can see myself slipping back like im missin out as much as i can and i make myself sick when i can. I need serious help! any recovering anorexicz out there than can tell me how they stopped themselves from relapsing or if anyone has good advice could u please give it to me? Also i'm nearly 9 stone and i feel so fat all the time and i cry when i look at skinny girls. i want to go back down to 5 and a half stone...without endin in hospital again, any clues to boost my confidence and help me?