Hello, what seems to be the problem?
Well, I'm not feeling very well at the moment. I'm preparing for the exams and I've been staying up late studying these days. This morning I got up very early to do some work, and I fell on the floor. I came around after a few seconds.
Mm. Have you had any other signs of sickness?
I've been pretty nervous, and my eyes hurt sometimes.
Well, it sounds as if you've probably been overdoing your studying and you're too tired. I don't think there's anything to worry about, and I think you should take it easy for a while and try to get plenty of sleep.
Yes, I haven't been getting much sleep lately.