Severe nausea and i can't throw up to get rid of the nausea?

Unrelieved nausea: Your nausea may have little to do with the GI tract & therefore may not respond to vomiting. Biliary & pancreatic disease may be present. Gas/bloat syndrome? Consider "central" causes like: motion sickness, vertigo, migraine headache, brain problems (some very serious). Also, rule out infection (? Urinary tract), food poisoning, medication side effects, pregnancy, & even stress. See your doctor.