Help!!!! Scared to go to sleep

Patient: One moment I was laying in bed watching a show ad the next I was waking up with a rapid heart beat and my legs shaking… I looked at the clock and a half an hour went by. I don’t remember falling asleep. I don’t even know if I was asleep. I just remember feeling like I couldn’t breathe and my heart was beating fast and my legs shaking.}

Symptoms: Not remembering, heart palpitations, rapid heart beat, shaking legs