7-year-old vomits, usually at night 1-4 hours after falling asleep. Feels better after vomiting once or twice. No fever. Grinds teeth in her sleep. Vomits up to three times a week, but sometimes goes three-four weeks without vomiting. Fine in summer, June-October. Happens all winter long, every year. Doctors find nothing. gagged easily as infant. breastfed first three years. milk intolerance but not allergic.