Hi, you are experiencing anxiety may be with the thought either you may have it or you can't stand it. And it seems fear of the thing which has no possibility to come true but still mind feels threat and showing usual response of fight flight through panic. If u want to work on this then I need more detailed history of ur thoughts n feeling to replace it with other.
Next Steps
Do breathing exercise. but best is to consult experts for relief.
Health Tips
stop visiting such sites if it is creating fear in you. it's fine and not mandate if we don't know many things.