During tonight's episode of Teen Mom 2, Kailyn Lowry dropped a bombshell while chatting with ex-boyfriend and first baby daddy, Jo Rivera. The mother-of-two — who is pregnant with her third child — revealed that she never thought she would be able to have another baby, let alone so easily. She said, "I was told I couldn’t carry any more children. I was told I would have to go through fertility treatments and IVF and all kinds of things." She added, "So even now, I’m still nervous that I could have a miscarriage. Another one." Kail suffered a miscarriage while she was married to Javi Marroquin, the father of her second child.

When an MTV producer asked if she had been using birth control, she admitted that she wasn't. She said, "It was not planned and not prevented. He knew I wanted a baby and if it happened, it was fine." She continued, "It was a choice."

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By now, fans know that she is no longer with her third baby daddy, Chris Lopez, despite expressing that she wanted to be together during the episode. Just last week, the reality star mama hinted that he cheated on her after she commented on co-star Briana DeJesus' tweet. She said, "sounds familiar," and added, "I was dealing with the same thing."

Unfortunately, although Chris has no interest in being filmed — or being in his baby's life at all — the very pregnant star said that she wanted to film her third pregnancy so she could tell her side of the story. She explained, "I’ve seen all the sh-t Jenelle [Evans] has gone through, with having three kids with three people. It’s going to get out anyway, so I might as well tell my story and be transparent about it so the truth is out there and not a bunch of rumors or assumptions." You go, girl! "Baby Lo" is due any day now.

Teen Mom 2 airs Mondays at 9 p.m. EST on MTV.

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Scroll though the gallery below for photos of Kailyn's baby bump!