Thank you for posting your query.
First of all, let me reassure you that your symptoms do not suggest any severe internal injury.
Your symptoms are likely to be due to soft tissue injury
is due to injury in the skin nerves of scalp
As of now, there is no need to go to ER. You may take ibuprofen
tablets for pain relief.
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist