Hi, I have gone through ypur question and understand you concern.
This seems to be a typical tensive type headache, the most common type of headache. This normally would last for 3 days at max, and it should not prevent you from doing the usual activity. Still, if it lasts longer, or gets worse I would recommend a cranial CT (which would also see the
sinuses), because the second option in my opinion would be an involvement of the sinuses.
So, if the pain goes away, I would consider it a normal tensive headache, with nothing to worry about, and no real preventive treatment, nor curative one.
Otherwise you should have a cranial CT
Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions.
Wishing you good health.