@harleyshammer Thank you.
A. A refusal to maintain body weight at or above a minimally normal weight for age and height (e.g. weight loss leading to a maintenance of body weight less than 85% of that expected, or failure to make expected weight gain during period of growth, leading to body weight less than 85% of that expected).
B. Intense fear of gaining weight or becoming fat, even though underweight.
C. Disturbance in the way in which one's body weight or shape is experienced, undue influence of body weight or shape on self-evaluation, or denial of the seriousness of the current low body weight.
That is what constitutes anorexia; it isn't just not eating, it is the unhealthy and sometimes delusional view of ones image to such a degree that unhealthy measures are taken. If you have these symptoms, see a professional right away. Until these criteria are even arguably met, you probably do not have anorexia nervosa.