Land of Midnight Shadows

I was falling. I had been falling for eternity. No end, no beginning. Just darkness. And then, a soft chirping sound reached my ears, echoed through the darkness. Trees rustled in the distance, but I couldn't see. I moved my arms around, trying to feel. Nothing. A sob came out of me. And another. And another. Until I was crying, shoulders quivering. And then panic settled. First slow and then hard and fast. What is happening to me?