Dealing with an eating disorder

I don’t really know where to start, a few months back about 3 months ago i lost about 17 pounds and losing more up till now which brings me to 19 pounds. Every time I’m one pound less it satisfies me to see the number drop but also being concerned that it’ll get out of line. I developed a eating disorder when i went on a diet not knowing that I cant even eat or enjoy certain foods or junk food like i did before. Not knowing that my weight would be my main concern and worrying about it everyday every minute. It’s so difficult to make myself eat more then i do, paranoid I’ll gain my weight back.

I want to know how i can help myself or steps i can do to stop being this way, for anyone who has dealt with this before. Or to share their own story.