I know I have an eating disorder and I'm ashamed. ?

I'm 16 years old, and a closet binge eater. Whenever I come home from school , I reach for the pantry, and eat and eat an eat. Iv looked online at countless articles, and I know pretty clearly that this is what I have. My mom has found wrappers and boxes in my room and so has my dad. I'm pretty sure they know that I eat a lot, and my mom asked me last week if I was a closet eater and I said no. I'm too ashamed of this to admit to her or tell anyone. But I'm overweight and I want to be healthy. How do I deal withthis?