Bulimia...Need help ending this habit.

I am 21 years old and I believe that I am suffering from Bulimia. In October of 2011 I used to weight 170lbs (I am 5'6). I have recently lost 40 pounds and I now currently weight 130lbs. I lost all the weight through exercise and limiting my calorie consumption to 1,200 calories per day. At 130 pounds I am happy with my weight. I eat healthy and many times restrict myself unhealthy foods, yet around twice a month, I break down and binge on a lot of food and then vomit because of the fear of gaining weight. I thought I had this under control, but this last week, I have binged twice and I am really scared that this disease will take over me. I know I have a problem with food, either I try to limit myself too much, or completely loose control. I am posting here, because I want today, to be the day that I take my last binge. I want to lead a healthy life. My family and my friends do not know of this. I seek help in you guys, what worked for you guys? Please let me know. I am certain that I cannot do this alone, I need support, and guidance, and I hope that I can find it here. Thank you.

Here are few lines of my favorite song:


I don't know what's worth fighting for
Or why I have to scream
But now I have some clarity
to show you what I mean
I don't know how I got this way
I'll never be alright
So, I'm breaking the habit
I'm breaking the habit
Im breaking the habit
Tonight