Hello JewelQueen: I noticed this is your first post (in your new account) here on PC. So... welcome (back) to PsychCentral.

I'm sorry I cannot be of any particular help with what you are experiencing. However here are links to 5 articles, from PsychCentral's archives, on the subject of catastrophic thinking the first by DocJohn. Hopefully some of the suggestions within them can be of some help:

What is Catastrophizing?

Catastrophic Thinking: When Your Mind Clings to Worst-Case Scenarios

Navigating Catastrophic Thinking, Part 2

Navigating Catastrophic Thinking, Part 3

5 Ways to Stop a Worry-Filled What-If Cycle

I hope you find being back on PC to be of benefit.