Hi, I'm Not Sure If This Really Involves My Health...but

hi, I'm not sure if this really involves my health...but I have been having a problem with a boy and the whole situation is making me feel sick to my stomach. Its made it really hard to eat because I feel like I want to throw up. I don't want to be involved with him anymore, but the idea of telling him I'm done with the relationship makes me feel sick again. do I have an eating disorder?