There’s a range of experiences for sleep paralysis, and I’m sure a sleep doctor could help you figure out if that’s what is going on.
I don’t know what mental tools you use to deal with bipolar disorder, but some of the tools you use there are also helpful with sleep paralysis. If you use mindfulness, you’ll have some training in how to be less attached to the thoughts springing from your emotions. You may have learned not to fight the thoughts, but to just let them be thought and then go. You don’t have to pay attention to them.
The same thing works with sleep paralysis.You are getting the experiences more often because of your meds, it sounds like you mean. Treat these dreams/visions/whatever the same way as you treat your useless thoughts. You look at them. You don’t fight them. You learn to recognize them for what they are, and you just let them go away.
Recognizing them is useful in another way. You can train yourself to wake up enough to switch on the light. Or maybe you already do this? If so, you’re on the right track.
There are meds that may or may not help. I don’t know what they are, but when I was reading about it, they mentioned a few. The sleep docs will know what to use. But what I read said that it’s a lot like bipolar. You need meds and you need mental techniques to allow you not to let the dreams bother you.
I’m not a doctor, so anything I say should be confirmed by a specialist, but I don’t think you’re going crazy. These are not hallucinations—at least, not in the sense that Bipolar or Schizophrenic folks might have. These are things that really are there—in dream life. You are not making this stuff up. It’s a real dream of a much more powerful type.
Maybe you can learn to appreciate it—possibly even to guide it, as lucid dreamers do. Maybe you can have a bit of fun—making weird stuff that tickles your fancy happen. If you can do that, it will lose its power to bother you somewhat. In fact, that’s another technique I saw mentioned…. I think. Maybe I made that one up. But if I did, it’s based on a lot of stuff other people have written.
Good luck. Keep us up to date on your adventures. I really think you’ve got something important there. It’s a gift. But like learning to be a shaman, you have to learn a lot in order to make it useful. It’s not easy.