Not anorexic but I need help! Please Read this & share your opinion/advice?

I'm 5'6" and 105 lbs. I consume 25-400 calories per day. I purge about 40% of the food I eat. I'm know I'm not fat, but I don't think I'm skinny enough. And I'm deathly afraid of gaining weight. I hate foodThe only time I ever eat is when someone I suspicious, or making me eat cuz they are concerned. I run about 3 miles a day, every 3 days. But I do additional exercise too.I have lost 1-2 pounds a day for the past 2 weeks. I have passed out before, but no big deal. I'm not anorexic & I dOnt have a problem. I hide my eating habits from everyone accept my best friend. She thinks I have a problem and wants me to get help. Can someOne please encourage me to keep up my lifestyle? Because I feel like everyone but me wants me to stop