scary nightmare

i just woke up because in my dream, i imagined there was some like visual hack where my brain or some software would like take the image I was seeing and make it vibrate up and down at a high speed while parts of it flashed black and white, to give me a seizure and kill me. after I thought of this, I pictured what that would look like in my mind and then i had some sort of "brain zap" and i was freaking out but I couldn't snap out of it for several seconds. felt like my imagination was trying to get me killed. i woke up several hours earlier than normal and i am typing this now. i get exploding head syndrome frequently when trying to sleep, and i am extremely startled by sudden unexpected changes or noises. the idea of my brain trying to throw me into some sort of seizure mode terrifies me but i felt like that's what my nightmare was just now. i feel under a huge amount of stress all the time and i developed an anxiety disorder last year. sleep is when it gets the worst. things like benzos or maybe even weed could help temporarily but then make it worse in the long run for me I think.