Are you not eating for a reason, why stave yourself? Lack of appetite can mean many things. Your body will go into starvation mode, it will hold on to the fat, you won't lose weight, it will mess metabolism, muscle mass will deteriorate. You will become weak,dizzy, confused,tired,hair loss, period stops, irritable, unable to concentrate, cold... So yeah ..
Yeah, it's a psychological problem you seem to have, and it could lead to anorexia. It's good that you recognize that u have a problem though. Try to regulate your eating habits or, if you don't think you can do that alone, get help ASAP. Eating disorders can really mess you the hell up.