Feeling crappy

The first time in AGES where I've had to leave work early
I feel sluggish, have migraines, a fever and basically feel like I want to pass out
I work at a medical centre so obviously I was bound to catch something
But I don't think I'm sick because of a virus
I think I'm sick because I'm not eating enough calories
I just can't
I know I need a bit of an unfill but I'm waiting until April to get some taken out before I go overseas
It also doesn't help that I've been working every single day and haven't had a day off in weeks...oh the joys of juggling two jobs

*end rant*