Nocturnal Seizures vs Nightmare

I haven't been diagnosed yet but i will begin my neurology referral soon. Back story- I have been a VERY lucid dreamer since i was about 15 (i'm now 29). I've had sleep paralysis, hallucinations, conversations etc; I've come to terms with that just being my normal. I moved overseas 3 months ago and broke my foot 5 weeks ago. I've had 4 different episodes in the last 13 days but they are getting increasingly more concerning. I haven't been sleeping well at night at all (i chalked it up to breaking my foot) and lately i get uncontrollably tired and will fall asleep nearly without warning. All 4 of the have led to the normal sleep paralysis and lucid dreaming. The new things - My head jolts back and forth and i clinch my jaw to the point that i think I'm going to break my teeth (aware that its happening but can't control because of sleep paralysis), when i come to, my heart is racing and i gasp for air. Once fully awake i have a terrible headache, slight confusion and my teeth/jaw are sore. All 4 of the instances have happened during a daytime nap- not night time sleeping. Has anyone heard of this? It's new and pretty frightening. I called my doctor today and had a phone consult with him, i will see him on Friday morning and he mentioned that a neurology referral will be placed. Thanks for reading!