i think you should take an urgent advice as nose bleed after few days of trauma may be problematic if ignored.
there seems to be some mucosal breech or a fracture
of one of the bones of skull that mey be causing this bleed. furthermore this headache also needs eveluation though it may be due to the external injury
for proper evaluation it may need CT scan
of skull to look for any breech and then corrective steps could be taken.
so better get an early evaluation.
thanks for your query
wish speedy recovery of your child
Dr. Amit Kumar