I'm just wondering if you ever read about sleep paralysis prior to this happening? Only because I never experienced sleep paralysis until after I watched a video about someone talking about it. Then one night my mind was like welp we have nothing else to dream about so lets take what we heard about from that lady and make it happen! And I vaguely recall a similar experience, but it wasn't very terrifying because I think it only lasted a few seconds. Scary while it was happening, but when I woke up I basically forgot about most of it. So I think reading about it makes it worse because you're basically telling your brain to expect it. And the brain generates it.