'Teen Mom 2' Sneak Peek: Jenelle And Nathan Prepare For His Time Behind Bars

The parents-to-be are feeling more than anxious about his 30-day sentence.

On the season premiere of "Teen Mom 2," Jenelle's boyfriend Nathan learned that he has to spend 30 days behind bars in order to dismiss a felony charge against him. Now, in an emotional sneak peek, the two prepare for Nathan's court appearance -- and to say goodbye. Afterward, he will go straight to jail to begin serving his sentence.

"I'm just worried about you," Nathan tells Jenelle in the clip, below. "I'm worried about how you're gonna be feeling. How are you doing?"

"I'm just gonna have to deal with it when it comes, I guess," she says. "I don't want to put makeup on in case I cry."

While Nathan tries to be strong for Jenelle, reality sets in as they make their way to the courthouse.

"I try not to think about it a lot because the more I think about it, the more I get anxiety like you do," Nathan admits.

How does the couple cope before meeting with Nathan's lawyers and making their way inside? Watch the video, and be sure to watch a new episode of "Teen Mom 2" tonight at 10/9c.