Hi Contage,
It happens to many people. You can have a look at this topic
Premonitions
yet this thread is not very clear because some people speak about premonitions when they are awake and other speak about precog dreams.
I’ve had some premonitions too, but they were generally about unimportant things, for instance a phone call, etc. A day, I went by car at some friends and I had the feeling they weren’t at their home. I felt they were in a little town nearby so I went there, I parked my car in a place I never went before and when I went out of my car, they just went out from a shop in front of me. 
Yet I wonder why people generally focus on bad things when they have premonitions. 