Hi my dear, I am sorry for the bad food poisoning you experienced after the party. Keep drinking water with oral rehydration salts you find OTC. Take probiotics to stabilize intestinal flora. You might be having mild dehydration, explaining weakness you are having. Next, you might be caught by anxiety explaining the increased heart rate. If vomiting or diarrhea won t stop, should go to ER to start replacement therapy intravenously. Wish fast recovery.