My 2yr Old Has Been Vomiting About Once A Day

My 2yr old has been vomiting about once a day for the last 6 days. No fever. no stool for 3 days. Anytime I give him solids he will vomit around 3 hours later. Still getting wet diapers. He is drinking liquids. After he vomits he goes right back to a normal 2yr old running around and having a good time.
Thank you