Aw, mama, that sounds tough! Are you pregnant, or is this something else? Kasi a few of us had awful morning sickness or pregnancy nausea na sobrang gripping, tapos may iba rin na it's just a bug or something they ate, but either way, rest muna and keep hydrated, okay? If it doesn't improve in a day or two or you're feeling really weak, better check with your OB or doctor para sure lang.