Trouble eating...

shocatnida

So i've been at this up and down for about a year but i finally got serious with it around March of this year. I've been losing weight slowly but yesterday and today i've noticed that i'm having trouble making myself eat. I do eventually eat but i dont know why i'm having problems with this.

i'm 5'1, 19 and 129 pounds and am an active dancer. any advice?