You sound depressed. Stress can spin up in many ways which include but are not limited to headaches, insomnia, or upset stomach. A potential cause of this health hazard could also be the compulsion of life or extreme pressure at school. Get relaxed by trying different relaxation techniques such as calming, breathing, going around your building, and hanging out with a friend. Unessential as it may seem, these facts with such relevance as eating good food, doing exercise, and sleeping enough are also quite important.