The pain and tenderness in the nose is related to the injury
Where as headache might not be related to your injury.
Usually pain in the neck and adjoining areas of the skull may be due to tension headache
You may take pain killers like Paracetamol/ Ibuprofen
twice or thrice a day for 2 days. If you are not feeling better, you might consult your doctor.
How ever if headache is severe, associated with vomiting
etc or pain in nose is severe- please do not hesitate to visit your doctor immediately.
Hope my answer helps you.