Hi
I have intercranial hypotension due toa bad basal skull fracture years ago
(the cause of it I won’t go into)these headaches are debilitating and can knock you for days,when I get them I have to sleep with extra pillows can’t lie flat.For relief I have aLumber puncture to relieve the pressure it helps a lot.
You should get your eyes checked too get your optic nerves checked.
I hope everything will be ok for you and your HA you can get under control AND don’t Dr Google he will feed you.
Let me know,from a sufferer.