Hi my 3 year hasn't went for a pee in over 12 hours now. She was at daycare yesterday and drinks loads she came home didn't pee and didn't through the night. She woke up for drinks of water so that's more fluid intake. So woke at 5am this morning and hasn't been and then she has vomited twice up pure water and yellow stomach bile. She's fully potty trained and is very good at going and she would pee a good amount cause she loves drinking water.