What did Victor do when the creature followed him to his bedroom in Frankenstein?

In the novel Frankenstein, Victor
Frankenstein creates a monster. His dreams of reanimating life come true two years after
his initial quest.  After seeing the eyes of the monster he brought to life, Victor fled
his flat. Ending up close to a Swiss coach, Victor finds that his childhood friend,
Clerval has come to see him.

Fearfully, Victor and Clerval
return to Victor's apartment. Victor is afraid that he will not only see the
abomination, he is also fearful that Clerval will see the monster and know what he has
done. Once in the apartment, Victor regains his composure upon realizing that both his
apartment and his bedroom are empty; the monster is
gone.

After entering his bedroom, Victor believes that he
sees the monster enter the room.

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—Oh, save me! save me!” I imagined that the
monster seized me; I struggled furiously, and fell down in a
fit.

Victor, seized by the
horror of seeing the monster again, fell into a nervous fever which was responsible for
keeping him sick for many months.