Hi welcome to Health care magic forum. When ever there is an injury to the hard surface of the body, there will be oozing of blood, and secretions around the injury, it will take time for remission of the swelling. But usually it needs treatment with antibiotics, and antiiflamatories for remession of the swelling.
There is also a possibility of concussion
type of head injury
when there is injury to the head, so ialso advise you to consult a surgeon for diagnosis and treatment.
I also advise you to follow some diet recommendationsas avoid taking more of potato, other tubers, pulses, and fish as these may increase the oozing and pain.
Wishing for a quick and complete remission of the swelling and thanks for calling.