what is this called?

a lot of times, i get things i perceive to be like "visions" although i know it's my ocd. however, in my mind there's nothing i can do to stop this kind. for example, currently i'm really anxious about going on a long car ride of 8 hours with my grandma. i'm paranoid and keep envisioning a crash. i think of it so much that i get scared the only way to stop it is to not go. it feels like final destination except it's hard to convince myself it's just paranoia. would you call that a delusion? just paranoia? i'm not sure. i'm open to advice to control it as well. i cant miss the trip, it's for an important event plus i don't want to give in to ocd.