This is Dr. David
it sounds like you have an eating disorder
and a body image disorder.
this is called body dysmorphic disorder.
I am glad you are seeking help for this and realize that you have a problem with this.
this will take a long course of counseling and treatment to help you get over this.
how long have these symptoms been going on?
these symptoms are often associated with a severe anxiety disorder.
there are medications and counseling which will help you.
are you willing to see a doctor or psychiatrist about your body image dysmorphic disorder and your eating disorder. and possibly take some medications like an SSRI medications which can help treat these symptoms you have?
cognitive behavior therapy also can help as well. which is a type of psychotherapy technique.
let me know if you have other questions.