A look back at memorable moments from Season 4.
Chelsea, Jenelle, Kailyn and Leah reflect on their experiences as young mothers.
Rehashing what has happened with Kailyn, Leah, Jenelle and Chelsea.
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.
Kailyn suffers a meltdown. Aubree meets Adam's new baby for the first time. Jenelle talks about a plea bargain with her lawyer.
Adam angers Chelsea with a visitation request; Jenelle has an unexpected surgery.
Kailyn breaks down when she realizes her mom won't be at her wedding; Chelsea takes Aubree to her first dance class.
Kailyn and Javi celebrate their wedding; Chelsea graduates from esthetician school; Jenelle accepts a plea; Jeremy turns down a local job.
Ali tests out her wheelchair; Leah struggles with Jeremy's absence; and Jenelle and Nathan receive exciting news.
Kailyn's baby is born; Leah and Jeremy work on their relationship; and Nathan is arrested.
Javi makes his return to work, so Kailyn finds herself left with the children. Things get worse between Nathan and Jenelle. Jo finds herself a new place to live. Chelsea hears what's going on with Adam. Leah finally finds out what's wrong with Ali.
Dr. Drew hosts a check-up with the cast to see how or if things have changed since the season finished filming.
Unseen footage from the past season.
Dr. Drew continues his check-in with the girls as he finds out if anything has changed since the cameras stopped filming.
Jenelle finds out the gender of the baby she is expecting. Ali becomes aware of her condition. Kailyn attempts to raise two children and maintain her marriage at the same time.
Jenelle and Nathan prepare for his approaching jail time; Chelsea moves into her new house; Kailyn invites Jo and Vee to Isaac's birthday party; Leah struggles after receiving bad news.
Leah begins to take medication to deal with her anxiety. Kailyn and Javi go to see Joe and Vee's apartment for the first time.
Jenelle struggles to take care of Jace while Nathan is away; Leah and Jeremy disagree over finances.
Leah and Jeremy visit Ali's specialist; Jenelle and Nathan reunite upon his release from jail; Chelsea learns about Adam's court appearance; Javi departs on a trip for work; Kailyn feels lonely.
Jo and Vee visit Kailyn, whose estranged mother has shown up; Chelsea gets word about her esthetician license; Corey's father helps Leah with Ali's wheelchair; Jenelle starts the divorce process.