This morning my son vomit after he finish his milk and afternoon he vomit again and just now 6 pm he vomit again after his milk? I check his temperature 37.6 , what should I do? Should I bring him to see doctor?

U can still monitor him and sometimes, it may be just acid reflux which is not so worrying. Be positive but I know it's easier said than done. Just take note on his temperature. Let the tummy rest and not put too much fluid as I believe the tummy is already upset. You may try to take like 5ml of water slowly and gradually increasing it to prevent dehydration.