'My Teen Is Pregnant And So Am I' Debuts on TLC

JUST WHEN YOU THINK YOU'VE HEARD OF EVERY TWIST OF EVERY KIND OF PREGNANCY, TLC IS GIVING US A NEW ONE TONIGHT, WITH THE DEBUT OF ITS REALITY SHOW, "MY TEEN IS PREGNANT AND SO AM I." HOW THE BABY... See More

JUST WHEN YOU THINK YOU'VE HEARD OF EVERY TWIST OF EVERY KIND OF PREGNANCY, TLC IS GIVING US A NEW ONE TONIGHT, WITH THE DEBUT OF ITS REALITY SHOW, "MY TEEN IS PREGNANT AND SO AM I." HOW THE BABY BUMPS ARE JUST THE BEGINNING OF THE MOTHER/DAUGHTER DUOS. YOU'RE 17 YEARS OLD. THAT IS MINE. Reporter: IT'S THE LATEST STITCH IN THE RICH TAPESTRY OF THE REALITY TEEN PREGNANCY DRAMA. TLC'S "MY TEEN IS PREGNANT AND SO AM I," CHRONICLES THE JOURNEY OF TEEN MOTHERS WHOSE OWN MOTHERS ARE SUSPECTING AT THE SAME TIME. HOW DID YOU REACT WHEN YOUR MOM TOLD YOU SHE WAS PREGNANT? I WAS KIND OF UPSET. Reporter: LIZ FORBES AND HER 36-YEAR-OLD MOTHER, ANN, ARE TWO OF THE MOTHER/DAUGHTER DUOS THE SHOW FOLLOWS FROM PREGNANCY THROUGH BIRTH. I'M GOING THROUGH THE SAME THING MYSELF. SHE'S MINE NOW. ARE YOU MARRIED TO HER? NO, I'M NOT. Reporter: WHILE THE OTHER FAMILIES GO TO WAR WITH ONE ANOTHER, LIZ AND ANN SEEM TO BE TURNING THEIR SIMULTANEOUS PREGNANCIIES INTO A BONDING EXPERIMENT. IT BROUGHT US CLOSER AGAIN. Reporter: ALTHOUGH THE SHOW IS SUPPOSED TO ENTERTAIN, IT RAISES PROVOCATIVE QUESTIONS ABOUT PARENTING. YOU CAN SEE MOTHERS IN THE AUDIENCE SAYING, MAYBE SHE DOESN'T HARD ENOUGH ON YOU. HER BEING HARD ENOUGH ON ME, DOESN'T CHANGE THE FACT THAT IT HAPPENED. Reporter: DOO YOU THINK TEENAGERS ARE IN LA LA LAND ABOUT WHAT IT MEANS TO BE A TEENAGE PARENT? YEAH. Reporter: NOW THAT YOU'RE IN REALITY. IT'S IS NOT ALL FUN AND GAMES. SO MANY BUMPS IN THE ROAD. IT'S NOT LIKE WORK WHERE YOU GET YOUR BREAK. NO. THERE'S NO BREAK. Reporter: AS LIZ FACES THE REALITY OF MOTHERHOOD AT SUCH AN EARLY AGE, SHE'S FOUND APPRECIATION FOR HER OWN MOTHER'S STRUGGLES. IT WASN'T UNTIL WE SAT DOWN WITH LIZ, THAT GREAT- GRANDMOTHER PAT BECAME CLEAR TO HER. Reporter: TELL ME ABOUT THE CYCLE THAT YOU'RE A TEENAGE MOM. YOUR DAUGHTER IS A TEENAGE MOM. I'M GOING TO TRY MY BEST. Reporter: FOR "GOOD MORNING AMERICA," JUJU CHANG, ABC NEWS, NEW YORK.