Hi and thanks for the query,
Headaches can either be primary or secondary. What you describe is more of a secondary headache. Its true that exertion and lack of enough sleep or rest could cause such symptoms. However, in your situation, causes of post nasal drip
associated with headaches must be considered. A chronic sinusitis
is a very common cause in this case. Associated with headaches and post nasal drips. Chronic rhinitis
are also very common. An early diagnosis and treatment are very important to avoid chronic complications like mastoiditis
and brain infections.
I suggest you consult an ENT specialist
thanks and best regards,