You shouldn't have kids if they don't make you happy.
Jenna learns that she's going pregnant, which she's unhappy about.
Jenna needs to figure out whether to keep the baby.
Jenna decides to have the baby and give it up for adoption.
Jenna have the baby and raise it in spite of her misgivings.
Jenna is relieved to not have the responsibility, and the child is adopted by a loving family.
Jenna ends up being a terrible and resentful parent and the child suffers because of it.