I always feel tierd & i get headches and sometimes feel a little sick. helpp!

I always feel tierd & i get headches and sometimes feel a little sick. helpp?

Lately ive been feeling really tierd and i always go to sleep , i also get headaches and soemtimes feel light-headed and sick. I have to admit , i do each alot of junk food , but i always have plenty of fruit juice and healthy snacks, and im in a good shape (slim/slender). Basically as soon as i get in from school il just go to sleep becuase i have a headache , but sometimes i dont have a headache but i still go to sleep. I don't actauly feel stressed or anything either .. can anyone tell me what might be wrong please?

It could be a number of things ranging from the need to drink more water, being depressed, to having mono. It sounds like your body is missing some nutrients and/or may be dehydrated. If i were you i would call a doctor....