Hi and welcome!

To me it sounds like an eating disorder, probably bulimia non-purging type. However, I have to stress the fact that I am NOT a mental health professional and this is not a diagnosis - just an opinion as an outsider.
I suggest you contact a psychologist, he will provide an accurate diagnosis for you and help you deal with your problems.
Don't be scared, girl. This is a safe place with many many warm people to talk to.
I hope you stay with as and work for a healthy relationship with food.

Take care... xxx