Anyone will get a headache (or airsickness) if they "rubberneck" while the aircraft is turning. Flying per se in commercial aircraft has nothing whatsoever to do with brain bleeds. Drink as much water as you feel you want without worry.
you really need to go to your gp and say to him this happen to my sister , while she was coming home from being on holiday and she took headaches but she told her gp it was a different pain , from the heaches she got her gp just tried to tell her it was the presure just from the pain cause her head and eye was going mad , so please go and try and get a scan done my sister had a brain tumor and the dr didnt even no even though she kept telling them it wasnt a cluster headache as the pain was sp different x