Rock the Cradle is the twenty-sixth episode in the fourth season of Full House. It is also the fourth season finale. It aired on May 3rd, 1991.
Becky is thrilled by the sudden and unexpected news that she is pregnant. But she decides to hold off telling anyone until her husband Jesse returns from his upcoming two-month band tour.
Meanwhile, Jesse finds out about the pregnancy, he is torn between honoring his contract and remaining home with Becky--a dilemma ultimately resolved by, of all people, Michelle.