The associated symptoms with the following disorder are confusional wakefulness,
sleep paralysis, nightmares and night terrors. This can occur
in any
sleep stage (REM and non-REM stage).
To rule out parasomnias you need to undergo Polysomnyography and sleep analysis. You need to take out time for further evaluation. Sleep with light on. Short term benzodiazepine against prescription will help you. I suggest you to consult physician or sleep specialist. Take care and regards.