Second what whiteraven wrote.
I'm susceptible to hypnagogic hallucinations, which happen during/between the phase of falling asleep and the first REM cycle (while sleep paralysis usually happens during much later stages of sleep/night, when waking up from REM as opposed to going into REM) as well as night terrors (same phase of sleep/early nights). It definitely happens more when I'm sleeping in complete darkness.
I have multiple nightlights both in the bedroom and hall.
For me I also noticed it happens more when it's really warm in the bedroom.
Since you have trouble falling asleep - I also recommend some form of audiobook, music, white noise ... this is also something that tends to help with with my hallucinations/night terrors.
If you can, do get a sleep study just in case, though. While it doesn't sound like sleep apnea, better be safe than sorry. Could also be narcolepsy? Just good to rule those out :hug: I feel ya, really do. Those kind of things suck big time. I don't get the "can't breath" part, I jump right into FLIGHT! :wtf: And when I do have sleep paralysis, it's a "can't yell" problem, fortunately not a breathing problem (but equally terrifying/triggering)
(I also sleep MUCH better in the early dawn hours/morning when it starts getting light. I will wake up tons of times during the night, only to sleep 3 hrs straight after 5:30 or whenever it currently starts getting light outside -- and yes, absolutely a fear/hypervigilance thing for me)