Unexpected — Season 4

A pregnant Jenna wants a car for her birthday. Myrka's mom kicked her out for getting pregnant. Soon-to-be-grandma Jessica tries to salvage the relationship between teens Reanna and Taron. Tyra leaves Alex and Layla behind at home as she heads to college.

Jenna only wanted one thing for her birthday: a car. Away at college, Tyra receives devastating news. Taron and Reanna accuse each other of cheating weeks before she is due. Myrka and Ethan get an ultrasound, but no one gets to know the baby's gender yet.

Jessica worries Reanna may be going into early labor. Tyra is furious that Julie's internet boyfriend has moved in. Myrka invites her mom to her gender reveal party. Jenna refuses to move her pet rabbit's cage to make room for a new crib.

Tiarra hears the Matthew drama when she gets together with Hailey 1. Taron threatens to take Reanna to court to see his baby. Myrka and Ethan prepare for an extravagant gender reveal party. Jenna's dad refuses to let her mom be a part of the baby shower.

Myrka and Liliana have a blowout fight over social media. Jenna gives her parents an ultimatum -- get along at the baby shower. Reanna and Taron sit down with their moms to sort out custody. Tyra gets stuck in a storm on the way to see Alex and Layla.

Myrka attends her last sonogram appointment alone due to COVID-19. Reanna's planned C-section may be in jeopardy. Lilly is pregnant with her second child. Tyra and Alex go on their first date in over a year.

Reanna gives birth during a pandemic. Jenna and Aden fight over the baby shower. Tyra has a little too much fun on her cheerleading trip in Miami, Florida. A debate over circumcision makes Lilly and Lawrence's family dinner awkward.

At the hospital, Myrka's contractions get worse. Jenna's mom causes a scene at her baby shower. Kim discourages Lilly from making the same mistake twice.

Layla's birthday party turns sour for Tyra and Alex. Myrka gives birth to a beautiful baby girl. Lilly's pregnancy hormones mean her temper might scare Lawrence off for good.

Lawrence asks Lilly's parents for permission to marry her. Myrka and Ethan video chat with their parents to show off their new baby. Tyra admits that Alex is cheating. Aden is late for Jenna's final doctor's appointment.

Lilly and Lawrence take a vacation before the baby comes. The Ybarras head to the hospital to pick up Myrka, Ethan and their new grandbaby. Tyra hopes that moving back in with Alex and Layla will mend their relationship troubles. Jenna gets induced.

Myrka struggles with breastfeeding. Julie reveals some shocking news. Lilly and Lawrence announce their engagement to their families. Matt worries Aden doesn't have what it takes to support Jenna in the delivery room.

Jenna gives birth to a baby boy. Lawrence is feeling the pressure as Lilly nears her due date. Liliana meets baby Attalie for the first time, but her criticism of Myrka goes too far. Tyra and Tiarra head to Louisville, Kentucky, for girl time with Hailey.

Jenna and Aden introduce their family to baby Luca. Myrka worries that her stable home with Ethan's family is crumbling. Lilly and Lawrence worry for their baby's life when LJ is born completely silent.

Lilly and Lawrence bring their new baby home. Michelle shares devastating news with Ethan and Myrka. Tyra and Alex part ways.

Tensions are high as Myrka and Ethan confront Michelle for kicking them out. Alex walks off set, leaving Tyra to pick up the pieces. The teen moms discuss babies and boyfriends, and they give exciting updates on their lives!

The teen dads get real with their girlfriends' moms. Lilly and Lawrence divulge LJ's circumcision troubles. Jenna's parents' final confrontation reveals some toxic truths. The teen moms show how much their babies have grown!

Myrka and Ethan take a shopping trip with Ethan's parents. Alex drives Tyra and Layla to Tyra's cousin's house for a playdate. Jenna and Aden make pizzas with Jenna's high school friend. Lilly and Lawrence have fun at a family pool party.