Thanks for writing to health care magic.
If a child has repeated vomiting
(projectile) after a head injury
or has nose and ear bleed or falls unconscious or has seizures he should be taken immediately to the emergency.
So please monitor the baby for the above.
If you feel your baby has some thing abnormal then request you to take him the ER.
Prevention of such injuries is important. So take measures to child proof your house.
Hope this helps.