I always feel like I have to vomit. I thought that it may be something I was eating or drinking so I stopped eating certain foods that I felt made the feeling worse and the result is still the same. I've found out that both of my children constantly have the same feeling, as if they need to vomit. Recently, the feeling has been worsening for us all. It's constant, even if either of us goes all day without eating. I'm very concerned and I have no idea what to do. What could be wrong with us?