Dear friend, welcome and thanks for entrusting your query here at HCM !
, increasing on bending can be due to sinusitis
Have you seen an ENT?
Do you get dull aches in the forehead, between the eyes, dark, aching eyes?
140/80 is not a worrisome BP and it rises with pain as a normal phenomenon.
Please consider ruling out a sinus problem since choked sinus opening can cause headaches.
Then there is a long list of causes for headaches.
Please tell us if you have any additional symptoms.
I hope you are fully satisfied with the guidance I gave.
I would be glad to answer any further queries.
Thank you and Good luck !