the last two months i have been waking up in the middle of the night with my hearing fading in and out and it it feels like my brain is pulsing once im fully awake the pulsing stops and my hearing comes back fully but its followed by a headache that can last all day this can happen a few times every night and im literally afraid to go to sleep at night, i have been to the doctor and all she does is change my blood pressure meds. does anyone have a clue to whats happening to me?