Kailyn Lowry and Chris Lopez are currently estranged and during last night's episode of the Teen Mom 2 reunion, it became quite clear why.

Months after the ex-couple welcomed their baby boy, son Lux Russell, Lowry traveled to Los Angeles to film the reunion special and while doing so, she opened up about her difficult pregnancy during an interview with Dr. Drew Pinsky.

“The pregnancy was really hard,” Lowry told Dr. Pinsky during the first part of the Teen Mom 2 Season 8 reunion special. “Chris [Lopez] and I haven’t seen each other in a month, so he hasn’t seen the baby either … It’s kind of a hard pill to swallow.”

Lowry started up a romance with Lopez at the end of last year but after learning she was pregnant with their child, they called it quits. In the months that followed, Lowry was forced to endure her pregnancy alone as her ex-boyfriend reportedly enjoyed the company of other women. 

“He cheated on me my whole pregnancy," she revealed. "The things I went through, leading all the way up to having [Lux], was something that I wouldn’t wish on my worst enemy. I was like, ‘Oh, it’ll get better. It’ll get better.’ And then, it never got better, so now we’re where we’re at.”

“We don’t have… there’s no contact at all,” Lowry added.

Since splitting from Lopez nearly a year ago, Lowry has been linked to other men, including her former husband, Javi Marroquin, but at this point in time, she seems to be single. That said, she and Dionisio Cephas have been flirting with one another on social media for several weeks and may be on the verge of a new romance.

In addition to the 3-month-old child she shares with Lopez, Lowry is also mom to 7-year-old son Isaac whose father is Jo Rivera, and 3-year-old Lincoln who she shares with Marroquin.

To see more of Kailyn Lowry, her family, and her co-stars, including Jenelle Evans, Chelsea Houska, Leah Messer, and Briana DeJesus, don't miss new episodes of Teen Mom 2 Season 8 on Monday nights at 9 p.m. on MTV and new episodes of ninth season of Marriage Boot Camp: Reality Stars on Fridays at 9 p.m. on WEtv.