Lately I am always sad. I cry a lot-- when im frustrated, when I think of things I have to do, even when I'm just laying in bed. I am extremely irritable and short towards my friends and family, and every little thing annoys me. My best friend says I've "changed" but I think she thinks so because I've stopped living life her way... I don't know if that has anything to do with this, but I was just wondering what's wrong with me & if it's serious enough to tell my parents about and to see a doctor.