The second season begins with two grandmas battling over their new grandson. Also: A kid-at-heart dad anxiously waits to see his newborn playmate; two high-school sweethearts bring their third baby into the world.

A recovering drug addict tries to prove that he's a new man; a couple who lost three babies in three years face an intense delivery; a couple with no experience with parenthood receive little help from their lively moms.

A large fibroid becomes an obstacle to a delivery; a two-time fainting father is once again challenged.

A couple expecting quadruplets is featured. Also: A long-distance runner endures a marathon delivery; a pastor delivers his eighth baby with his own hands.

A scared teen turns to her boyfriend for strength as she faces the delivery of her second child; a couple in their forties face a frightening delivery.

A family feud erupts; a couple welcome twins; a teen mom faces a frightening delivery.

A teen mom's baby is rushed to intensive care moments after delivery; a couple try to go the natural route for the delivery of their second child; a stay-at-home dad gets a lesson in Japanese tradition from his mother-in-law.

A doctor tests his staff's patience; parents of two boys hope for a girl the third time around; a couple want a vaginal birth, but complications set in.

An unplanned pregnancy forces a dad to learn how to be a supportive husband; a mom faces a painful delivery without an epidural.