I don't know what's going on with my eating habits

[greenstar2001]

I'm kinda nervous about how much, or how little, I've been eating lately. I bring my lunch to school, which usually consists of a sandwich, a handful of cheez-its, and maybe 2-3 strings of licorice. On most days, I might only eat the licorice, and give the cheez-its to my friends and ignore the sandwich completely. My mom picks up my lunch bag, and she is always asking me why I don't eat that much, and I really don't know why. I used to eat everything in my lunch bag and sometimes mooch off of my friends, so I don't know why I barely eat anymore. When I get home, I usually have just a little bit of dinner and then leave to finish my homework. I'm just not that hungry. I'm scared that this is due to stress. My ex told me, while we were dating, that she was scared because she didn't realize that she was hungry until her mom pointed out that her hand was shaking. Another friend of mine forgets to eat when she gets too stressed out and only remembers to feed herself when the hunger pains hit her. I don't want to diagnose myself, but I'm fairly certain that I don't have anorexia. I am a bit on the chubby side and I was really insecure about that in the past, but I am overcoming that so I don't think it has anything to do with a desire to lose weight. But even though I'm eating less, I'm still healthy. I'm alert in the mornings, I stay up all day, I'm not sluggish, everything is normal. The only thing I can think of that might be causing this is stress. School is stressing me out, but I don't think its *that* excessive, just the normal stress of high school. Is there something I could do to fix this problem? Is there something I should look out for?