First, Gregor is repeatedly roused by the members of his family, who are alarmed that he is home and hasn't left for work. His voice had changed, he was unable to manuever himself off the bed, but no one could understand him and he was too broad to pass through the doors. His sister left him milk to drink, but he had nothing to eat..... he was hungry.
Initially, the obstacles Gregor faces are largely physical. Your answer could include the following points: