Um... make sure what you are eating is somewhat balanced and take a multi-vitamin?

Well, fortunately, I happen to know a little bit about different medications, and, to back up my theory, I checked elsewhere, just to be on the safe side. According to WebMD, yes, loss of appetite is a side effect of Lexapro. So, in my honest opinion, as long as you're taking it only as directed by your doctor/other health care professional, you should be okay with it. Just be on the lookout for other possible side effects that are mentioned.

Additional info: Once you get to the below-referenced page, click on the "Side Effects" tab.

If I'm really upset , worried or something , then I don't feel like eating even if I'm hungry. My stomach tries to hurl it back up ¬_¬. It might be that.

I have the same thing. I am not entirely sure why I have no interest in eating, but I came across this website that may explain what we have.

There are different disorders depending on different combination of symptoms.

Check out his site:
http://www.healthline.com/symptomsearch?addterm=Loss%20Of%20Appetite