It depends on how long you've been getting sick like that. If it's a passing thing, try mint tea or saltine crackers. Rest, of course, although if you're that sick it's hard to do anything else. If you're getting that sick for any length of time, see a doctor. If nothing else there are suppository anti-nausea drugs they can give you. I know it sounds gross but extreme situations call for extreme measures and if you really can't keep anything down by mouth it might be advisable. I used to be a professional puker so I know about these things.
Texan, you really shouldn't have said that about the toilet brush holder...he's probably retching just from reading that!