raspberry, I'm sorry you're going through this. I've had spells like that and they are not fun. I especially get paranoid that H will have a car crash on the way to or from work and die and it doesn't help that his commute is so long, that just makes me worry more.
Do you have prn meds to help with anxiety that might help curb your paranoia? Or IDK trying some methods of relieving anxiety that might help-grounding, meditation, what not?

I'm not sure what has helped these episodes pass for me, different things like med changes or suddenly shifting into mania.

I'm sorry you're going through such a hard time.