I had a very realistic night terror saw the grim reaper? help!?

Gotta use this account since my question limit is full on the other, I'm 20 years old not faking or lying about anything i'm serious about this. Last night I went to bed around 4 am and fell asleep with my ceiling fan running feeling relaxed the first time I woke up startled was around 4:45 am with my vision blurry and my heart pounding insanely fast and felt very disoriented. I felt better after 5 minutes though but I was scared to go back to sleep but I still did anyway. I then was slightly dreaming and was hearing my thought and i heard my best friend shouting never and it got to the point where it was insanely loud and enraged like NEVER!!!!!!!. It was scaring the hell outta me although i never actually woke up yet, it went out of my head and i was still laying there for quite some time with my heart constantly racing for no reason. Finally i woke up again with an insanely fast heart beat I actually saw 4 huge bugs with beady red eyes (they were round about 5" in diameter) crawled up my arms toward my face and I actually felt it except they disappeared when they got right next to my face. I then heard a huge cracking noise down stairs and a few seconds later I saw a distinct outline of a huge 2-dimensional shadowy figure in the middle of my room that resembled the grim reaper. He was standing there for 5 seconds then shifted toward the door of my room then disappeared. I was literally shaking but my heartbeat all of a sudden was going back down which was good. After that I realized that even the first time I intially had woken up, the same bugs had crawled up my skin when i was waking up just like this second time. I don't know what this means I've never has something this realistic happen ever in my life. The last time i even had a nightmare was about 15 and that was just a dream that wasn't even that scary. This really disturbed me