Welcome to Psych Central! Oh, my, that does sound scary. I'm not familiar with these kinds of experiences personally, but I understand that you don't have much control over these thoughts and feelings. Is there any way you can distract yourself? Talk to yourself and say, "No, that's not true"?

You are not going to die tomorrow. That's just your delusions talking. It's not rational. Okay?

I assume you are taking medications for your conditions. Have you talked to your psychiatrist about your current problems? I encourage you to do so. You might need your meds adjusted.

Okay?