Is it normal thoughts of being in bad scenarios?

Okay so a lot of times i think what if i was in a bad scenario, and by bad, i mean like what if i was kidnapped.

Ranging from stuff like what if i got lost in a desert and died, what if a serial killer kidnapped me and tortured me, what if I was a murderer and went on a killing spree, what if i was homeless and starved to death, what if i was raped etc. etc. you get the idea; these are severe sitations that i think about.

And i think about them constantly, at least 3 times per day usually, to great depth and imagining every possibility but it just makes me stressed like 'wow what IF i better watch out'.

IIN?