Thanks for writing to health care magic.
I can understand your concern.
Since your child vomited once it is better to get him examined once. There are certain danger sings if present after a head injury
or fall one should be careful of. They are projectile vomiting
, seizures, loss of consciousness
, bleeding from the nose or ear etc.
Continue to ask further queries as required.
Hope this helps.
Dr Y V Siva Sankara Murty
Associate Professor of Pediatrics