For the past week I've been nauseous. I am not pregnant because I am 13 and have never done anything before. I have a sore throat, and I've been feeling really tired. I get like 8 hours of sleep daily, I eat all my meals, and nothing has changed or anything. I always feel like throwing up, like something is trying to go upwards. I can't tell my parents, because they've been stressed lately, and I would only add to it. Their stress started before my nauseousness. Any one know why this is happening and how to stop it?