Kailyn Lowry is stressing out as she prepares to give birth to her third child, and who can blame her? After all, the "Teen Mom 2" star already has two children, and when it comes to her baby's father, Chris Lopez, he is no longer involved.

According to a sneak peek at next week's new episode of "Teen Mom 2," Lowry's excitement for baby number three has been overshadowed with fear due to the high-risk nature of her pregnancy, and as she speaks to a friend, she explains why she has to be extra careful as she nears her due date.

“Isaac was early and then plus all the complications I’ve had...

[My doctor] is afraid of me going into preterm labor," Kailyn Lowry explained to the friend. I’m really, really stressed.”

When Lowry announced her pregnancy to fans in February, she didn't reveal who had fathered the child. However, after months of speculation into who her mystery man may be, she confirmed it was Chris Lopez, who she dated briefly at the end of last year after revealing plans to divorce Javi Marrroquin. Lowry also said that she didn't believe she could get pregnant before explaining that her third pregnancy was “not planned” and “not prevented.”

Kailyn Lowry was told she couldn't carry any more children

During a conversation with her former boyfriend Jo Rivera, who fathered her first son, seven-year-old Isaac, the "Teen Mom 2" star revealed that a doctor informer her that she would no longer be able to carry children.

She also said that she would have to undergo fertility treatment and IVF if she wanted more kids. She then said she was nervous that she may miscarry her third child.

What happened between Kailyn Lowry and Chris Lopez?

According to Radar Online, the relationship between Lowry and Lopez became one of convenience just a short time into the romance, and according to a source, Lopez never truly loved the reality star.

Instead, he allegedly kept her around until he decided that he wanted something different. That said, if Lopez wants to be involved in their child's life once he or she arrives, he is reportedly welcome to be as involved as he'd like.

For more of Kailyn Lowry and her family drama, tune in to new episodes of "Teen Mom 2" season eight on Monday nights at 9 p.m.

on MTV. Lowry currently stars in the series alongside Jenelle Evans, Leah Messer, Chelsea Houska, and Briana DeJesus, who joined the show earlier this year after previously appearing on the now-canceled "Teen Mom 3."