Hi friend, welcome to PC!
Your not gunna like this, but you need to see a doctor. I would recommend going to an inpatient eating disorder treatment facility to get the help you need. I can say that because I just got out one of those facilities, and I did not think I was sick enough to go. But trust me, you will never think you are "sick enough" to get treatment. Now is the best time to go.
I would recommend the Eating Recovery Center. They have places all over the country, and a really good program.
I hope you get the help you need. Good luck!