Leah's Nightmare! Inside 'Teen Mom 2' Star Messer's Newest Health Crisis With Aleeah Grace

Leah Messer's nightmare is getting worse!

In a sneak peek clip for Teen Mom 2, the mother-of-three opens up about how doctors are suggesting she tests her daughter, Aleeah Grace, for the same condition that her twin, Aliannah Hope has, which is muscular dystrophy.

She opened up to a friend during a phone call about how since she and Corey Simms, her ex, carry the gene, doctors suggested they test her.

Watch the heartbreaking clip above! Teen Mom 2 airs Monday nights at 9pm ET only on MTV!