When I move my head too fast I feel dizzy. If I walk only a few yards I vomit at the end, when I walked to my room around 1 I vomit up a solid w/o eating food since Friday, the solid was close to a cube shape but more irrelevant shape it feels like rubber, and orange color with all my vomit but the shape of it died and flattened. And the other vomit has bin a liquid. What can I do at home to stop this and is it serious?