Hey, a while ago I had a kinda odd dream, and I was just wondering if anyone could suggest what it might mean?

I was in a strange room with writing up the walls, and running in a circle just on the inside of this white circle that is drawn on the ground in chalk. I kept running and running, and then the circle began to get smaller and smaller, and as it did I began to run in smaller and smaller circles (so that I can stay inside it). The circle then shrinks into nothing, and I feel myself suffocating, then I jolted awake.

Thanks,
Meg.