As Laying In Bed Ready To Fall Asleep Then Started

as laying in bed ready to fall asleep then started to have hard time breathing so decided to lsy on my back and close my eyes next thing i know my head weirdly starts shaking making my teeth hit together and i see a lightning bolt while my eyes are closed. I sit up then after a few minutes i briefly feel like i can't breath i get a breath back my hands are shaking an my heart was racing. What just happened?