Thank you for your query.
I can understand your concern. It is advisable that you consult the ER and seek their opinion. In the meantime you can give him a mild pain killer like acetaminophen
to reduce the pain. I would have loved to guide you but cannot do without examining the child.
I hope I have answered your query to your satisfaction.
Wishing your son an early recovery.
Rajiv K Khandelwal