anorexia is basically a mental state where no matter how thin or skinny you are you see yourself as fat. you skip meals to lose weight and just because a person is 'thick' doesn't meen they can't be anorexic. anorexia has to do with a great amount of self hate and many people believe it is a mental illness. i have personally suffered from it for 2 years now and i am not pro-ana but if you do become anorexic please becareful and just remember your beautiful and perfect the way u r(:
As you're aware, anorexia is extremely dangerous. Some symptoms of anorexia are; skipping meals, you feel uncomfortable eating in front of people because it makes you feel fat sometimes, lack of energy, counting calories etc. You can look up more symptoms online to see if they apply to you. I think the best course of action would be to let your parents know your fears. That way, if it hasn't developed quite yet, you can get your eating habits back on track before something serious happens. Hope this helped and good luck :)
Without more information we really can't tell whether you're anorexic. If you're severely underweight though, regardless of whether you're anorexic or not it's unhealthy and possibly dangerous. Take a BMI test (body mass index). On an unrelated note, I'm about to have dinner.