I got sick from the stomach. I think some food messed my stomach up. Anyways, i have been vomiting everything I ve eaten since yesterday. Today I went to the doc and got two shots. They said it was poisoning. How bad is it to vomit? I mean if i eat something now and then vomit wut I ate, does that mean the cals i ate went away or it doesn't matter if I vomit, the cals eaten will be still there, confusing huh? hoo well HELP!!