Hi, this morning i went swimming as usual and i was feeling well, but when i when to shower i started to feel very dizzy and I got very pale and purple around my mouth, I almost fainted trying to get up, felt naussea and urge to go to the toilet, i went, but it was not diarrhea , it was soft but normal and not a lot, then i threw up like a full mouth so just a little bit, but just water nothing solid. I m still feeling weak, but not dizzy. This hasn t happened to me before, i m not pregnant, i m wondering what could it be?