Thanks for your query
I would suggest you to take your baby to an ENT specialist
May be he has hurt his external auditory canal or more seriously he may have hurt his tympanic membrane which needs attention.
The wound may get infected if not cared of and other secondary complications can occur, so always better to get a medical check up.Don't mess with it yourself or use medicines without doctor's prescription.
Hope this helps.
Update here how your baby stays.
Disclaimer: The Expert’s advice is provided for general informational purposes only and SHOULD NOT be relied upon as a substitute for sound professional medical advice
, as a complete assessment of an individual has not taken place.Please consult your nearest physician before acting on it. The advice is not valid for medico-legal purposes also.