I am very scared and shaken up. last night i was sleeping and randomly , i wake up and my heart was racing . it was beating so i hard and fast i felt it in my chest. i got scared snd panicked a bit snd i started crying. i was cery very scared. luckily my mother was able to comfort me but it took a whule before it went to normal . i was also shaking uncontrollably. i was just thinking the worst and i was scareed to go back to sleep. has this happened to anyone else ?! last time this happened to me was maybe a year ago