What does Gregor do when his mother faints?

Gregor follows his sister out of his room and into the living room hoping to help. He ends up locked out of his room and begins to crawl around the room until he became dizzy.

She ran into the other room to fetch some kind of smelling salts to bring her mother out of her faint; Gregor wanted to help too - he could save his picture later, although he stuck fast to the glass and had to pull himself off by force; then he, too, ran into the next room as if he could advise his sister like in the old days; but he had to just stand behind her doing nothing; she was looking into various bottles, he startled her when she turned round; a bottle fell to the ground and broke; a splinter cut Gregor's face, some kind of caustic medicine splashed all over him; now, without delaying any longer, Grete took hold of all the bottles she could and ran with them in to her mother; she slammed the door shut with her foot. So now Gregor was shut out from his mother, who, because of him, might be near to death; he could not open the door if he did not want to chase his sister away, and she had to stay with his mother; there was nothing for him to do but wait; and, oppressed with anxiety and self-reproach, he began to crawl about, he crawled over everything, walls, furniture, ceiling, and finally in his confusion as the whole room began to spin around him he fell down into the middle of the dinner table.