For about a month now I have been feeling very strange. I am definitely a person who loves to eat, but recently even the thought of food makes me want to gag. No matter how hungry I am, I just cannot force myself to eat, and when I finally do, it takes all the strength in the world to keep it down and the nauseous feelings don't go away for hours. I have no idea what to do. I am only 15 years old, my mother is convinced there's nothing wrong with me, but I definitely know something is not right, see as I love food. I'm not on any pills or medication so it's not a side effect. Is this a mental problem? Or do I have some sort of virus?