In Contents of a Dead Man's Pocket when does Tom start to worry?

Answer 1

Tom begins to worry when his yellow sheet of all of his ideas flies out of the window.

Answer 2

Tom starts to worry when he realizes that the only way out of the apartment is through the window and the shelves he had climbed to reach the window are on the brink of collapse. He becomes increasingly anxious about the precarious situation he is in as he weighs his options for escape.