A source close to the People magazine said, "Kylie wants to disappear and be out of the spotlight and focus on her health and happiness."
The 20-year-old business mogul is reported to be due in February with the child with rapper Travis Scott.
"Kylie isn't going to publicly address her pregnancy until she gives birth. She's not doing any public appearances and just wanted to take six months off," said the source.
Jenner has been dating Scott since earlier this year after splitting from her on-again, off-again boyfriend Tyga in April.