Dude, when I was a kid I had this recurring dream that something was chasing me. Sometimes it was a tsunami wave, sometimes it was a huge monster, some other times I didn't even know what was after me, but I always had this urgency to run away. Most of the times, I couldn't run, I was too slow, it was going to catch up with me any second, as the city around me collapsed.
This made me feel that.