I get sleep paralysis and hallucinations while falling in and out of sleep, and they have nothing to do with my bipolar. It's just hypnagogia. Some of them are scary, but I just try to relax even though I can't move, and let myself go back to sleep. Sometimes I can wrench myself out of it and move, but I still feel unsettled for a long time.

Hypnagogia - Wikipedia, the free encyclopedia