How do I know if I have an eating disorder?

When I was a kid, my family used to tell me I was overweight and unfit. It caused me to eat less and less, until I was only eating a few times a week. Thankfully, by the time I got to high school, I managed to realise I was actually pretty small. Definitely not as skinny as my sister or friends, but I was at least smaller than average. I slowly worked up my appetite until I was eating three meals a day again.

But this is where my problem comes in. Around sometime last year, I've noticed my unhealthy eating habits are returning; however, now I also have moments where I suddenly eat way too much (to the point of feeling sick). The thing is, I know I'm not fat. In fact, I actually think I'm quite thin. But from what I know about anorexia/bulimia, people with those disorders typically have a distorted view of their body. I don't have that, but I still know my eating habits aren't normal.

Lately, I skip most meals. I only eat when I feel faint or feverish (or sometimes I'll have a sudden craving to eat whenever I'm alone/bored). But then, once I've eaten, I feel awful--both physically and emotionally. I simultaneously feel nauseous, bloated, guilty, frustrated, and anxious.

I don't think this could be anorexia due to the fact that I have moments of over-eating, and I don't think it's bulimia since I don't purge. Is it possible I've just developed a bad habit without any disorder being involved?

(Sorry if anything I said sounds ignorant. I don't know much about eating disorders outside of what I learned in school.)

Hey @mattdadd I think people get hung up on comparing their symptoms against the clinical definitions of an eating disorder. It is my opinion that you can have disordered eating and that its still an eating disorder. I think the core issue is how much you think about food and eating and how much that impairs your life.