I've been very tired for the past month even with caffeine. i'm nauseous, and all of my senses are very heightened. i'm 19. ?

Tired & nauseous: Many reasons for young women to feel very tired & nauseous but we must first make sure you're not pregnant if you've engaged in sexual activity, even if just once. After that, anemia, hypothyroidism & depression come to mind as common causes of fatigue. Lack of or inadequate sleep can also do this. Chat w/your Family Doc to figure out what's going on.