How can I get my appetite back?

I’ve been under an incredible amount of stress for the past two weeks. I recently graduated and started my first full-time job two weeks ago. At the same time, I’m taking evening GRE prep classes (and am taking the GRE on the 21st) as I will be applying to graduate programs in the fall. My new job has had a very steep learning curve that I had not anticipated, and it has left me stressed, overwhelmed, and exhausted. My performance in my GRE class has reflected that, which has only added to my stress as, obviously, I need to do well on the GRE to be accepted into a graduate program. I spoke with my new boss about all this yesterday, and thankfully he was incredibly understanding and is letting me take the next two weeks off so that I may focus solely on the GRE, which has significantly reduced my stress level.

The issue, though, is that as a result of all this stress, I’ve had literally no appetite for the past two weeks. Even after yesterday, it hasn’t improved. It has gotten to the point where I can’t even force myself to eat anymore…the thought of eating makes me feel sick. I don’t have a scale, but I estimate that I’ve lost somewhere between 5 and 8 pounds. As a 5’4” female who weighed around 108 to begin with, this is obviously a problem. I need to eat (especially because I won’t be able to study and concentrate properly if I don’t), but I don’t know how I can get my appetite back. Any suggestions or advice would be immensely appreciated. It’s also become very apparent to me that I do not handle high amounts of stress very well, so suggestions for dealing with and managing high stress levels would also be very helpful.