I think I have an eating disorder ....

Lately I have been on a diet . It started off with working out and eating healthy . I used to weigh 134 and now I weigh around 120 , I'm still unhappy with my weight. Sooooo I started to cut off calories more and more.
Long story short ...
I now try to eat less ,or I'll eat something unhealthy and maybe make myself puke. 
When I wake up I ALWAYS think about what I'm going to eat for breakfast or what I'm going to eat for lunch. 
I read a lot about health and fitness etc. 
I compare myself to other women ....
I'm starting to feel like I have a problem and I don't know what to do.
Any suggestions ? 

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