I always feel ill these days. I missed something important 2 and a half weeks ago because I was throwing up with what felt like food poisoning, but I don't think it was that. I always seem to feel ill these days. Like really nauseous and headachey. I wasn't always this bad. I'm 29 and generally very fit with no history of bad health in my family. This might seem like a weird question, but has anyone else been feeling really ill lately?