Brief Answer:
Could be tension headache.

Detailed Answer:
Hi,
Welcome to health care magic,

It could be tension headache here which is a primary or simple headache caused by some precipitating or triggering factor and relieved by OTC analgesics
(ibuprofen,naproxen,diclofenac) and eliminating this triggering factor.

Tension headache may last for few hours to some days depending on triggering or precipitating factor like in dehydration (when water loss exceeds water intake),heavy sunlight exposure,sleep deprivation,wrong or uncomfortable posture,eye strains,stress,long working hours in one position etc.

You are a likely to be having a tension type of headache here.

So,take OTC pain killers (like paracetamol or diclofenac) which suits you and take bed rest or sleep with muscle relaxant and antacid (pantoprazole or ranitidine) if gas trouble.

Also,take over the counter antihistamine (like betahistine or cinnarizine) and maintain your fluid as well as electrolytes balance to relieve from dizziness.

Try to avoid contact with triggering factor.

If it is not relieved in-spite of taking treatment then you can see neurologist and undergo clinical examination, routine blood investigations,electroencephalogram or CT brain but only after neurologist advise.

Hope this detailed information will be helpful.

Regards,

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