'Sense of impending doom'. It means - outside of the context of literal impending doom - that your body has noticed something very wrong but can't identify It. Doctors take it quite seriously.
Madness string 105723
I'm watching an empire fall and we all know it but if we say something we're being 'dramatic' or something. When... shit is real out here. People really are not paying attention, and being bombarded by every side... it's terrifying what people believe, and what they are willing to risk over superficial differences.