A look back at memorable moments from Season 4.
Jenelle finds out she's pregnant in the Season 5 premiere. Later, Leah struggles with Ali's medical diagnosis.
Jenelle meets a new guy; Chelsea starts beauty school; and Leah goes on vacation.
Ali will need to use a wheelchair; Jo and Kailyn fight about Isaac's drop-off; Jenelle and Nathan decide to cohabit.
Jenelle moves in with Nathan; Chelsea invites Adam to pick up Aubree from pre-school; Kailyn and Javi put in an offer on a house.
Kailyn prepares for her wedding; Jenelle and Nathan decide to have a baby; and Chelsea celebrates her 22nd birthday.
With Aubree's 4th birthday approaching, Chelsea throws a party for her daughter. Jeremy passes out at work so returns home and it's court day for Kailyn and Jo.
Adam angers Chelsea with a visitation request; Jenelle has an unexpected surgery.