I'm Scared of My Eating Habits

For some reason, I'm eating less and less. It's not on purpose either. I don't want to bark or starve myself skinny. That's really dumb and so not attractive. It's not like I'm over weight or anything. If you've read my other journals, you'll know that I'm also doing track. In reality my appetite should increase. I'm down to eating two majorly small meals a day. I'm not taking any new medicines except one to conrol my asthma and Cingular. I forgot what was called and I'll add it in later. I've taken Cingular before. All the other medicines I have been taking for atleast over a year. If I eat more I get sick to my stomach. What should I do?