Kylie Jenner is opening up about one of the most physically difficult periods of her life, revealing that her pregnancy with son Aire became so medically complicated that she was placed on extended bed rest because the baby was “falling out” of her body. During an appearance on Jake Shane’s Therapuss podcast released on Wednesday, May 13, Jenner said her second pregnancy was dramatically harder than her first. The 28-year-old explained that she was only 12 weeks pregnant when severe sciatica and lower back pain suddenly left her unable to walk. Jenner said the complications continued for months and eventually forced doctors to confine her to bed after she became dilated far earlier than expected. “And lots of things were happening with my vagina,” Jenner said on the podcast. “I was three centimeters dilated for like a month and a half, two months, the baby was falling out.” According to Jenner, doctors instructed her to remain in bed because of the risk associated with the pregnancy.…