I have a sharp pain on my left side. cramping . can't breathe deeply and hurts to stand up straight. i just ate sushi and it started after that.?

?Anisakiasis or...: It may be simple food poisoning, but anisakiasis is the principal "worm" infestation of stomach, caused by ingesting anisakis larvae in raw or undercooked fish. Within a few hours there is severe upper abdominal pain, nausea, vomiting (relieved after endoscopic removal of worm). Anti-worm medication is available. Also possible, that require immediate attention--gallstones, ulcer, pancreatitis.

Gastroenteritis.: Could be that there was some bacteria in that sushi that has now made you sick. This may last a few days, and you could get some nausea, vomiting and diarrhea.