Go pharmacy, get two things: ORS (oral rehydration solution) and charcoal tabs. Since u no longer laosai, keep the tabs for next time you’re feeling gassy/about to get into food poisoning. ORS because it does sound u dah dehydrated sangat. (Just water not sufficient. It’s a combo of salts etc. If ur curious can look up the story of the indian doctor who saved so many kids from cholera)