I'm afraid that I might be showing signs of becoming anorexic?!

Over a year I lost 30 pounds, mostly in the summer. I monitored my calorie intake and I tried to exercise more often. I was more of an overweight child, so that lost my baby weight. My friends always joke about it, and my parents sometimes mention I don't eat enough. I always felt fat, but's normal.My feelings really depend on my mood, but there are periods of time when:

- I feel guilty for eating just meals
- I feel like I should cut my calories to less than 1000, and have attempted to do so.
- Sometimes I have these spurts if I think I ate too much, I kind of 'lose it'. I remember once I almost had a mental breakdown over someone bringing me an unexpected icecream when I had already had one earlier. I started doing mad jumping jacks and other exercises. I thought about throwing it up or looking for laxatives but I ultimately didn't.
- Sometimes I feel like I'm not deserving food.

What to do? :S
I hate feeling this way. Sometimes I feel like calorie counting and food is taking over my life, and I wish I could just forget about it without worrying I gained 43727942 pounds.