Welcome to the forum unger

Yeah the HI with Sleep Paralysis(SP) can be very scary especially if you were just looking paranormal stuff up. This state can also cause your mind to lose a sense of reality so you might believe that that stuff is really happening to you, it doesn't help when it's so realistic too.

Infact most possesions and Alien abductions are believed to have happened because of this.

All that you can do is just think "This is not real, it's just halucinations". Also make sure that you know that you cannot be hurt, you are completely safe.